pgsql: Remove ExecRemoveJunk(), which is no longer used anywhere.

Remove ExecRemoveJunk(), which is no longer used anywhere.

This was a leftover from the pre-8.1 design of junkfilters. It doesn't
seem to have any reason to live, since it's merely a combination of two
easy function calls, and not a well-designed combination at that (it
encourages callers to leak the result tuple).

Branch
------
master

Details
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http://git.postgresql.org/pg/commitdiff/2e852e541c84af85aa918762fc838fa44a399310

Modified Files
--------------
src/backend/executor/execJunk.c | 18 +++---------------
src/include/executor/executor.h | 1 -
2 files changed, 3 insertions(+), 16 deletions(-)