patch 8.2.0664: included undesired changes in Makefile

Problem:    Included undesired changes in Makefile.
Solution:   Revert the changes.
diff --git a/src/version.c b/src/version.c
index e90c884..6f83857 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    664,
+/**/
     663,
 /**/
     662,