patch 8.1.1306: Borland support is outdated and doesn't work

Problem:    Borland support is outdated and doesn't work.
Solution:   Remove Borland support, there are other (free) compilers
            available. (Thomas Dziedzic, Ken Takata, closes #4364)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index b2b6f53..f1c30a2 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -125,11 +125,7 @@
 #endif
 
 #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
-static int
-#ifdef __BORLANDC__
-_RTLENTRYF
-#endif
-sort_func_compare(const void *s1, const void *s2);
+static int	sort_func_compare(const void *s1, const void *s2);
 #endif
 
 
@@ -3803,9 +3799,6 @@
 
 #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
     static int
-#ifdef __BORLANDC__
-_RTLENTRYF
-#endif
 sort_func_compare(const void *s1, const void *s2)
 {
     char_u *p1 = *(char_u **)s1;
@@ -6855,9 +6848,6 @@
 
 #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
     static int
-#ifdef __BORLANDC__
-_RTLENTRYF
-#endif
 sort_hist(const void *s1, const void *s2)
 {
     histentry_T *p1 = *(histentry_T **)s1;