pgsql: Revert initdb --sync-only patch that had incorrect commit messag

Revert initdb --sync-only patch that had incorrect commit messages.

Branch
------
master

Details
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http://git.postgresql.org/pg/commitdiff/25d1ed04a2c4d176f6428b9eed57344e50f44d77

Modified Files
--------------
contrib/pg_upgrade/pg_upgrade.c | 6 ------
contrib/pg_upgrade/server.c | 10 ++++------
doc/src/sgml/config.sgml | 9 ---------
doc/src/sgml/ref/initdb.sgml | 11 -----------
src/bin/initdb/initdb.c | 16 +---------------
5 files changed, 5 insertions(+), 47 deletions(-)

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