patch 8.1.0811: too many #ifdefs

Problem:    Too many #ifdefs.
Solution:   Graduate FEAT_MBYTE, the final chapter.
diff --git a/src/testdir/test_search.vim b/src/testdir/test_search.vim
index 86df794..0dfea49 100644
--- a/src/testdir/test_search.vim
+++ b/src/testdir/test_search.vim
@@ -1127,9 +1127,6 @@
 
 " Test for search('multi-byte char', 'bce')
 func Test_search_multibyte()
-  if !has('multi_byte')
-    return
-  endif
   let save_enc = &encoding
   set encoding=utf8
   enew!
@@ -1178,7 +1175,7 @@
     " ' ̇' U+0307 Dec:775 COMBINING DOT ABOVE ̇ /\%u307\Z "\u0307"
     " ' ̣' U+0323 Dec:803 COMBINING DOT BELOW ̣ /\%u323 "\u0323" 
   " Those should also appear on the commandline
-  if !has('multi_byte') || !exists('+incsearch')
+  if !exists('+incsearch')
     return
   endif
   call Cmdline3_prep()