pgsql: timeline is not needed in BaseBackup()

timeline is not needed in BaseBackup()

This code was accidentally part of the patch, it's only
needed for the code that's for 9.2. Not needing the timeline
also removes the need to call IDENTIFY_SYSTEM.

Noted by Peter E.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/6693eb72c014e5e8bc2f7f3221ebd5507fdbe8ec

Modified Files
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src/bin/pg_basebackup/pg_basebackup.c |   20 --------------------
1 files changed, 0 insertions(+), 20 deletions(-)