patch 9.0.0279: the tiny version has the popup menu but not 'wildmenu'

Problem:    The tiny version has the popup menu but not 'wildmenu'.
Solution:   Graduate the wildmenu feature.
diff --git a/src/feature.h b/src/feature.h
index 529ada5..ebd5dbc 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -119,6 +119,7 @@
  * +file_in_path	"gf" and "<cfile>" commands.
  * +path_extra		up/downwards searching in 'path' and 'tags'.
  * +wildignore		'wildignore' and 'backupskip' options
+ * +wildmenu		'wildmenu' option
  *
  * Obsolete:
  * +tag_old_static	Old style static tags: "file:tag  file  ..".
@@ -339,13 +340,6 @@
 #endif
 
 /*
- * +wildmenu		'wildmenu' option
- */
-#if defined(FEAT_NORMAL)
-# define FEAT_WILDMENU
-#endif
-
-/*
  * +viminfo		reading/writing the viminfo file. Takes about 8Kbyte
  *			of code.
  * VIMINFO_FILE		Location of user .viminfo file (should start with $).