patch 8.2.2637: prop_remove() causes a redraw even when nothing changed

Problem:    prop_remove() causes a redraw even when nothing changed.
Solution:   Only redraw if a property was removed.

src/textprop.c

@@ -920,6 +920,7 @@ f_prop_remove(typval_T *argvars, typval_T *rettv)
 	    }
 	}
     }
+    if (rettv->vval.v_number > 0)
 	redraw_buf_later(buf, NOT_VALID);
 }
 

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2637,
 /**/
     2636,
 /**/