patch 8.0.1580: FEAT_CURSORBIND and FEAT_SCROLLBIND are unused

Problem:    FEAT_CURSORBIND and FEAT_SCROLLBIND are unused.
Solution:   Delete them.
diff --git a/src/feature.h b/src/feature.h
index 6d35265..7720296 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -696,20 +696,6 @@
 #endif
 
 /*
- * +scrollbind		synchronization of split windows
- */
-#if defined(FEAT_NORMAL)
-# define FEAT_SCROLLBIND
-#endif
-
-/*
- * +cursorbind		synchronization of split windows
- */
-#if defined(FEAT_NORMAL)
-# define FEAT_CURSORBIND
-#endif
-
-/*
  * +menu		":menu" command
  */
 #ifdef FEAT_NORMAL
diff --git a/src/version.c b/src/version.c
index 5850cba..9985b4f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1580,
+/**/
     1579,
 /**/
     1578,