That is in the Dashboard examples app and you will not be able to remove it via editing xml. Your best bet is to copy the Source Code section xml code given at the bottom and come out of the Dashboard Example App and go to Search and Reporting app by clicking App: Search&Reporting drop down on top left hand corner of your screen.
Once in this Search and Reporting app, now you can create a new dashboard here, and paste the xml that you had copied to the source of this new dashboard.
That should get rid of that bottom description and xml piece.
Basically, in short, create a new dashboard in some other app rather than "Dashboard Examples App" using below xml which is the source of that dashboard:
<dashboard>
<label>Single Value Color Clone</label>
<row>
<panel>
<title>Temperatures</title>
<single>
<title>Color By Threshold, Absolute Trend</title>
<search>
<query>| inputlookup sf-temperatures.csv | eval _time=strptime(DATE, "%Y%m%d") | timechart avg(TMAX) AS tmax span=7d | eval tmax = tmax/10/5*9+32</query>
<earliest>1403420400</earliest>
<latest>1433228400</latest>
</search>
<option name="trendColorInterpretation">standard</option>
<option name="trendDisplayMode">absolute</option>
<option name="trendInterval">-7d</option>
<option name="colorBy">value</option>
<option name="colorMode">none</option>
<option name="numberPrecision">0.0</option>
<option name="rangeColors">["0x0E31EB","0x6db7c6","0xf7bc38","0xf58f39","0xd93f3c"]</option>
<option name="rangeValues">[0,60,70,80]</option>
<option name="showTrendIndicator">1</option>
<option name="showSparkline">1</option>
<option name="useColors">1</option>
<option name="useThousandSeparators">1</option>
<option name="height">143</option>
<option name="underLabel">compared to last week</option>
<option name="drilldown">none</option>
<option name="unit">°F</option>
<option name="unitPosition">after</option>
</single>
</panel>
<panel>
<title>Stock Ticker</title>
<single>
<title>Color By Trend, in %</title>
<search>
<query>| inputlookup splunk-stock.csv | eval _time=strptime(date, "%Y-%m-%d") | timechart last(close) span=7d | fillnull value=NULL</query>
<earliest>0</earliest>
</search>
<option name="trendColorInterpretation">standard</option>
<option name="trendDisplayMode">percent</option>
<option name="trendInterval">-1y</option>
<option name="colorBy">trend</option>
<option name="colorMode">none</option>
<option name="numberPrecision">0.00</option>
<option name="showTrendIndicator">1</option>
<option name="showSparkline">1</option>
<option name="useColors">1</option>
<option name="useThousandSeparators">1</option>
<option name="height">143</option>
<option name="underLabel">compared to 1 year before</option>
<option name="drilldown">none</option>
<option name="unit">$</option>
<option name="unitPosition">before</option>
</single>
</panel>
<panel>
<title>Stock Ticker</title>
<single>
<title>Color By Trend, in %</title>
<search>
<query>| inputlookup splunk-stock.csv | eval _time=strptime(date, "%Y-%m-%d") | timechart last(close) span=7d | fillnull value=NULL</query>
<earliest>0</earliest>
</search>
<option name="trendColorInterpretation">standard</option>
<option name="trendDisplayMode">percent</option>
<option name="trendInterval">-1w</option>
<option name="colorBy">trend</option>
<option name="colorMode">none</option>
<option name="numberPrecision">0.00</option>
<option name="showTrendIndicator">1</option>
<option name="showSparkline">1</option>
<option name="useColors">1</option>
<option name="useThousandSeparators">1</option>
<option name="height">143</option>
<option name="underLabel">compared to 1 week before</option>
<option name="drilldown">none</option>
<option name="unit">$</option>
<option name="unitPosition">before</option>
</single>
</panel>
</row>
<row>
<panel>
<single>
<search>
<query>| inputlookup sf-temperatures.csv | eval _time=strptime(DATE, "%Y%m%d") | timechart avg(TMAX) AS tmax span=7d | eval tmax = tmax/10/5*9+32</query>
<earliest>1403420400</earliest>
<latest>1433228400</latest>
</search>
<option name="trendColorInterpretation">inverse</option>
<option name="trendDisplayMode">absolute</option>
<option name="trendInterval">-7d</option>
<option name="colorBy">value</option>
<option name="colorMode">block</option>
<option name="numberPrecision">0.0</option>
<option name="rangeColors">["0x0E31EB","0x6db7c6","0xf7bc38","0xf58f39","0xd93f3c"]</option>
<option name="rangeValues">[0,60,70,80]</option>
<option name="showTrendIndicator">1</option>
<option name="showSparkline">1</option>
<option name="useColors">1</option>
<option name="useThousandSeparators">1</option>
<option name="height">143</option>
<option name="underLabel">compared to last week</option>
<option name="drilldown">none</option>
<option name="unit">°F</option>
<option name="unitPosition">after</option>
</single>
</panel>
<panel>
<single>
<search>
<query>| inputlookup splunk-stock.csv | eval _time=strptime(date, "%Y-%m-%d") | timechart last(close) span=7d | fillnull value=NULL</query>
<earliest>0</earliest>
</search>
<option name="trendColorInterpretation">standard</option>
<option name="trendDisplayMode">percent</option>
<option name="trendInterval">-1y</option>
<option name="colorBy">trend</option>
<option name="colorMode">block</option>
<option name="numberPrecision">0.00</option>
<option name="showTrendIndicator">1</option>
<option name="showSparkline">1</option>
<option name="useColors">1</option>
<option name="useThousandSeparators">1</option>
<option name="height">143</option>
<option name="underLabel">compared to 1 year before</option>
<option name="drilldown">none</option>
<option name="unit">$</option>
<option name="unitPosition">before</option>
</single>
</panel>
<panel>
<single>
<search>
<query>| inputlookup splunk-stock.csv | eval _time=strptime(date, "%Y-%m-%d") | timechart last(close) span=7d | fillnull value=NULL</query>
<earliest>0</earliest>
</search>
<option name="trendColorInterpretation">standard</option>
<option name="trendDisplayMode">percent</option>
<option name="trendInterval">-1w</option>
<option name="colorBy">trend</option>
<option name="colorMode">block</option>
<option name="numberPrecision">0.00</option>
<option name="showTrendIndicator">1</option>
<option name="showSparkline">1</option>
<option name="useColors">1</option>
<option name="useThousandSeparators">1</option>
<option name="height">143</option>
<option name="underLabel">compared to 1 week before</option>
<option name="drilldown">none</option>
<option name="unit">$</option>
<option name="unitPosition">before</option>
</single>
</panel>
</row>
</dashboard>
... View more