pgsql: Remove fmgr.h includes from headers that don't really need it.

Remove fmgr.h includes from headers that don't really need it.

Most of the fmgr.h includes were obsoleted by 352a24a1f9d6f7d4abb1. A
few others can be obsoleted using the underlying struct type in an
implementation detail.

Author: Andres Freund
Discussion: https://postgr.es/m/20190803193733.g3l3x3o42uv4qj7l@alap3.anarazel.de

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/fb3b098fe88441f9531a5169008ea17eac01301f

Modified Files
--------------
src/backend/access/common/printsimple.c | 1 -
src/backend/nodes/makefuncs.c | 1 -
src/backend/replication/logical/logical.c | 1 +
src/backend/replication/pgoutput/pgoutput.c | 2 ++
src/include/access/brin.h | 1 -
src/include/access/gist_private.h | 1 -
src/include/access/hash.h | 1 -
src/include/access/spgist.h | 1 -
src/include/commands/async.h | 2 --
src/include/executor/executor.h | 1 +
src/include/jit/llvmjit_emit.h | 1 -
src/include/nodes/execnodes.h | 1 +
src/include/nodes/pathnodes.h | 3 +--
src/include/pgstat.h | 4 ++--
src/include/replication/origin.h | 1 -
src/include/replication/slot.h | 1 -
src/include/replication/walreceiver.h | 1 -
src/include/replication/walsender.h | 2 --
src/include/utils/bytea.h | 1 -
src/include/utils/formatting.h | 2 --
src/include/utils/rel.h | 3 +--
src/include/utils/snapmgr.h | 1 -
src/include/utils/tuplesort.h | 1 -
23 files changed, 9 insertions(+), 25 deletions(-)