postgresql: clean up patches

More cosmetic than anything else. The description in findstring.patch was
duplicated, postgresql-9.6.1 references confusing. Timestamps are not
needed, that's what git blame is for.

pkgs/servers/sql/postgresql/patches/disable-resolve_symlinks.patch

@@ -1,5 +1,5 @@
---- a/src/common/exec.c	2014-09-04 20:19:12.236057588 +0200
-+++ b/src/common/exec.c	2014-09-04 20:19:50.550251633 +0200
+--- a/src/common/exec.c
++++ b/src/common/exec.c
 @@ -218,6 +218,9 @@
  static int
  resolve_symlinks(char *path)

pkgs/servers/sql/postgresql/patches/findstring.patch

@@ -10,20 +10,6 @@ $out/share. To fix this, we just look for postgres or psql in the part
 after the / using make's notdir.
 
 ---
-From: Matthew Bauer <mjbauer95@gmail.com>
-Date: Wed, 29 May 2019 22:51:52 -0400
-Subject: [PATCH] Add /postgresql suffix for Nix outputs
-
-Nix outputs put the `name' in each store path like
-/nix/store/...-<name>. This was confusing the Postgres make script
-because it thought its data directory already had postgresql in its
-directory. This lead to Postgres installing all of its fils in
-$out/share. To fix this, we just look for postgres or psql in the part
-after the / using make's notdir.
-
----
-diff --git a/src/Makefile.global.in b/src/Makefile.global.in
-index b9d86acaa9..bce05464c3 100644
 --- a/src/Makefile.global.in
 +++ b/src/Makefile.global.in
 @@ -102,15 +102,15 @@ datarootdir := @datarootdir@

pkgs/servers/sql/postgresql/patches/hardcode-pgxs-path.patch

@@ -1,6 +1,5 @@
-diff -Naur postgresql-9.6.1-orig/src/common/config_info.c postgresql-9.6.1/src/common/config_info.c
---- postgresql-9.6.1-orig/src/common/config_info.c	2016-11-22 21:39:29.231929261 +0100
-+++ postgresql-9.6.1/src/common/config_info.c	2016-11-22 23:36:53.685163543 +0100
+--- a/src/common/config_info.c
++++ b/src/common/config_info.c
 @@ -118,7 +118,10 @@
  	i++;
 

pkgs/servers/sql/postgresql/patches/less-is-more.patch

@@ -1,6 +1,5 @@
-diff -Naur postgresql-9.6.1-orig/src/include/fe_utils/print.h postgresql-9.6.1/src/include/fe_utils/print.h
---- postgresql-9.6.1-orig/src/include/fe_utils/print.h	2016-11-22 21:39:29.148932827 +0100
-+++ postgresql-9.6.1/src/include/fe_utils/print.h	2016-11-22 21:39:36.283626258 +0100
+--- a/src/include/fe_utils/print.h
++++ b/src/include/fe_utils/print.h
 @@ -18,7 +18,7 @@
  
  /* This is not a particularly great place for this ... */

pkgs/servers/sql/postgresql/patches/locale-binary-path.patch

@@ -1,5 +1,3 @@
-diff --git a/src/backend/commands/collationcmds.c b/src/backend/commands/collationcmds.c
-index fcfc02d..d011394 100644
 --- a/src/backend/commands/collationcmds.c
 +++ b/src/backend/commands/collationcmds.c
 @@ -611,7 +611,7 @@ pg_import_system_collations(PG_FUNCTION_ARGS)

pkgs/servers/sql/postgresql/patches/socketdir-in-run-13.patch

@@ -1,7 +1,5 @@
-diff --git i/src/include/pg_config_manual.h w/src/include/pg_config_manual.h
-index 8f3ec6bde1..4fc01e4a0a 100644
---- i/src/include/pg_config_manual.h
-+++ w/src/include/pg_config_manual.h
+--- a/src/include/pg_config_manual.h
++++ b/src/include/pg_config_manual.h
 @@ -201,7 +201,7 @@
   * support them yet.
   */

pkgs/servers/sql/postgresql/patches/socketdir-in-run.patch

@@ -1,5 +1,3 @@
-diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
-index 743401cb96..be5c5f61d2 100644
 --- a/src/include/pg_config_manual.h
 +++ b/src/include/pg_config_manual.h
 @@ -179,7 +179,7 @@

pkgs/servers/sql/postgresql/patches/specify_pkglibdir_at_runtime.patch

@@ -1,6 +1,5 @@
-diff -ur postgresql-9.5.3-orig/src/port/path.c postgresql-9.5.3/src/port/path.c
---- postgresql-9.5.3-orig/src/port/path.c	2016-05-09 22:50:23.000000000 +0200
-+++ postgresql-9.5.3/src/port/path.c	2016-08-29 22:44:10.507377613 +0200
+--- a/src/port/path.c
++++ b/src/port/path.c
 @@ -714,7 +714,11 @@
  void
  get_lib_path(const char *my_exec_path, char *ret_path)