pgsql: Still more .gitignore cleanup.

Still more .gitignore cleanup.

Fix overly-enthusiastic ignores, as identified by
git ls-files -i --exclude-standard

Branch
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REL7_4_STABLE

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=dbf859c711b3d5981a5343a26a35236511b8d0aa

Modified Files
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contrib/pg_upgrade/.gitignore | 1 -
src/interfaces/ecpg/preproc/.gitignore | 3 ---
2 files changed, 0 insertions(+), 4 deletions(-)