patch 8.2.0965: has_funcundefined() is not used

Problem:    Has_funcundefined() is not used.
Solution:   Delete the function. (Dominique Pellé, closes #6242)
diff --git a/src/autocmd.c b/src/autocmd.c
index 8e0754b..d5b1651 100644
--- a/src/autocmd.c
+++ b/src/autocmd.c
@@ -1760,15 +1760,6 @@
     return (first_autopat[(int)EVENT_CMDUNDEFINED] != NULL);
 }
 
-/*
- * Return TRUE when there is an FuncUndefined autocommand defined.
- */
-    int
-has_funcundefined(void)
-{
-    return (first_autopat[(int)EVENT_FUNCUNDEFINED] != NULL);
-}
-
 #if defined(FEAT_EVAL) || defined(PROTO)
 /*
  * Return TRUE when there is a TextYankPost autocommand defined.
diff --git a/src/proto/autocmd.pro b/src/proto/autocmd.pro
index 7aa1de6..65a6352 100644
--- a/src/proto/autocmd.pro
+++ b/src/proto/autocmd.pro
@@ -23,7 +23,6 @@
 int has_textchangedP(void);
 int has_insertcharpre(void);
 int has_cmdundefined(void);
-int has_funcundefined(void);
 int has_textyankpost(void);
 int has_completechanged(void);
 void block_autocmds(void);
diff --git a/src/version.c b/src/version.c
index 25a0962..bc4cc43 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    965,
+/**/
     964,
 /**/
     963,