diff --git a/grep-2.7-const-range-exp.patch b/grep-2.7-const-range-exp.patch
deleted file mode 100644
index 102bdd8..0000000
--- a/grep-2.7-const-range-exp.patch
+++ /dev/null
@@ -1,64 +0,0 @@
-commit 99d3c7e1308beb1ce9a3c535ca4b6581ebd653ee
-Author: Paolo Bonzini <bonzini@gnu.org>
-Date:   Tue Sep 21 17:00:55 2010 +0200
-
-    dfa: process range expressions consistently with system regex
-    
-    The actual meaning of range expressions in glibc is not exactly strcoll,
-    which makes the behavior of grep hard to predict when compiled with the
-    system regex.  Leave to the system regex matcher the decision of which
-    single-byte characters are matched by a range expression.
-    
-    This partially reverts a change made in commit 0d38a8bb (which made
-    sense at the time, but not now that src/dfa.c is not doing multibyte
-    character set matching anymore).
-    
-    * src/dfa.c (in_coll_range): Remove.
-    (parse_bracket_exp): Use system regex to find which single-char
-    bytes match a range expression.
-
-diff --git a/src/dfa.c b/src/dfa.c
-index a2f4174..f3e066f 100644
---- a/src/dfa.c
-+++ b/src/dfa.c
-@@ -697,13 +697,6 @@ static unsigned char const *buf_end;	/* reference to end in dfaexec().  */
- 
- #endif /* MBS_SUPPORT */
- 
--static int
--in_coll_range (char ch, char from, char to)
--{
--  char c[6] = { from, 0, ch, 0, to, 0 };
--  return strcoll (&c[0], &c[2]) <= 0 && strcoll (&c[2], &c[4]) <= 0;
--}
--
- typedef int predicate (int);
- 
- /* The following list maps the names of the Posix named character classes
-@@ -979,10 +972,22 @@ parse_bracket_exp (void)
-                 for (c = c1; c <= c2; c++)
-                   setbit_case_fold (c, ccl);
-               else
--                for (c = 0; c < NOTCHAR; ++c)
--                  if (!(case_fold && isupper (c))
--                      && in_coll_range (c, c1, c2))
--                    setbit_case_fold (c, ccl);
-+                {
-+                  /* Defer to the system regex library about the meaning
-+                     of range expressions.  */
-+                  regex_t re;
-+                  char pattern[6] = { '[', c1, '-', c2, ']', 0 };
-+                  char subject[2] = { 0, 0 };
-+                  regcomp (&re, pattern, REG_NOSUB);
-+                  for (c = 0; c < NOTCHAR; ++c)
-+                    {
-+                      subject[0] = c;
-+                      if (!(case_fold && isupper (c))
-+                          && regexec (&re, subject, 0, NULL, 0) != REG_NOMATCH)
-+                        setbit_case_fold (c, ccl);
-+                    }
-+                  regfree (&re);
-+                }
-             }
- 
-           colon_warning_state |= 8;