grep: remove Commentz-Walter code

This code was not being used, and complicated maintenance.
We can bring it back from the repository if it turns out
to be useful later.
* src/kwset.c (struct kwset.reverse): Remove.  All uses of
FOO->reverse replaced by (FOO->kwsexec == bmexec).
(kwsalloc): Remove 'reverse' arg, as callers outside this
module do not care about algorithm choice.  All callers changed.
(kwsprep): When deciding whether to use Boyer-Moore, do not worry
about being called twice on the same kwset, as that is not allowed.
(cwexec): Remove; it was never called.  All uses removed.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/searchutils.c b/src/searchutils.c
index e0a94e27..336d9f9a 100644
--- a/src/searchutils.c
+++ b/src/searchutils.c
@@ -68,7 +68,7 @@ kwsinit (bool mb_trans)
           }
     }
 
-  return kwsalloc (trans, false);
+  return kwsalloc (trans);
 }
 
 /* In the buffer *MB_START, return the number of bytes needed to go