postgresql: removed ecpg-parallel-make-fix.patch

This patch causes build failure.
Similar patch is available in meta-oe, so this one
can be safely removed.

Signed-off-by: Mikhail Durnev <mikhail_durnev@mentor.com>
Merge pull request #119 from mdurnev/mdurnev/postgresql

postgresql: removed ecpg-parallel-make-fix.patch