pgsql: Remove resowner_private.h

Remove resowner_private.h

This header is not used since the refactoring of resource owners done in
b8bff07daa85, and all the functions declared in it became (well, mostly)
static inline local to each resowner kind's code path.

Author: Xing Guo
Discussion: https://postgr.es/m/CACpMh+BFmtK5Z=b6PvH4HLKhUpWa_VtRTZSrB4-yK-tQejpWGw@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/06a0f4d52be3a52a74725dd29c66cd486256a209

Modified Files
--------------
src/include/utils/resowner_private.h | 117 -----------------------------------
1 file changed, 117 deletions(-)