patch 8.2.5133: MacOS: build fails

Problem:    MacOS: build fails.
Solution:   Remove "#if 0" from timer_delete().
diff --git a/src/os_macosx.m b/src/os_macosx.m
index 1fdfbc7..acc5b07 100644
--- a/src/os_macosx.m
+++ b/src/os_macosx.m
@@ -370,7 +370,6 @@
  * Disabled because it is not currently used, but an implemented provided
  * for completeness and possible future use.
  */
-#if 0
     int
 timer_delete(timer_t timerid)
 {
@@ -380,7 +379,6 @@
 
     return 0;
 }
-#endif
 
 #endif /* FEAT_RELTIME */
 
diff --git a/src/version.c b/src/version.c
index c045d17..f27217e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5133,
+/**/
     5132,
 /**/
     5131,