patch 8.1.0932: Farsi support is outdated and unused

Problem:    Farsi support is outdated and unused.
Solution:   Delete the Farsi support.
diff --git a/src/globals.h b/src/globals.h
index 6cc3be2..82e663e 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1450,9 +1450,7 @@
 #ifndef FEAT_RIGHTLEFT
 EXTERN char e_nohebrew[]	INIT(= N_("E26: Hebrew cannot be used: Not enabled at compile time\n"));
 #endif
-#ifndef FEAT_FKMAP
-EXTERN char e_nofarsi[]	INIT(= N_("E27: Farsi cannot be used: Not enabled at compile time\n"));
-#endif
+EXTERN char e_nofarsi[]		INIT(= N_("E27: Farsi support has been removed\n"));
 #ifndef FEAT_ARABIC
 EXTERN char e_noarabic[]	INIT(= N_("E800: Arabic cannot be used: Not enabled at compile time\n"));
 #endif
@@ -1656,13 +1654,6 @@
 #endif
 
 /*
- * Optional Farsi support.  Include it here, so EXTERN and INIT are defined.
- */
-#ifdef FEAT_FKMAP
-# include "farsi.h"
-#endif
-
-/*
  * Optional Arabic support. Include it here, so EXTERN and INIT are defined.
  */
 #ifdef FEAT_ARABIC