Yes you can do it using the following line in props.conf against your source type.
SEDCMD-strip-timestamps = s/^[A-Z][a-z]{2}\s+\d{1,2}\s+\d\d:\d\d:\d\d((?!\s+\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\s+[A-Z]+\s+).*)/\1/g
NB: This will leave the first timestamp alone and remove all the others in each event.
$ cat inputs.conf
[monitor://$SPLUNK_HOME/etc/apps/testApp/logs/testfile.log]
index = test
sourcetype = testfile
$ cat indexes.conf
[test]
homePath = $SPLUNK_DB/test/db
coldPath = $SPLUNK_DB/test/colddb
thawedPath = $SPLUNK_DB/test/thaweddb
$ cat props.conf
[testfile]
SHOULD_LINEMERGE = true
BREAK_ONLY_BEFORE_DATE = false
BREAK_ONLY_BEFORE = ^[A-Z][a-z]{2}\s+\d{1,2}\s+\d\d:\d\d:\d\d\s+\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\s+[A-Z]+\s+
TIME_FORMAT = %b %d %T
TIME_PREFIX = ^
MAX_TIMESTAMP_LOOKAHEAD = 20
SEDCMD-strip-timestamps = s/^[A-Z][a-z]{2}\s+\d{1,2}\s+\d\d:\d\d:\d\d((?!\s+\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\s+[A-Z]+\s+).*)/\1/g
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