maint: remove gl/lib/reg*.c.diff; no longer needed

* gl/lib/regcomp.c.diff: Remove file, now that gnulib's
regcomp.c compiles regex.c with -Wno-unused-parameter.
* gl/lib/regex_internal.h.diff: Likewise.
* gl/lib/regex_internal.c.diff: This file induced a change to ensure
that the "Idx" type was unsigned and to remove a few "VAR < 0"
comparisons.  These days, it is probably fine to stay in sync with
gnulib/glibc's copies
of these files, so remove these patches, too.
* gl/lib/regexec.c.diff: Likewise.
Prompted by a report by Assaf Gordon and a suggestion from Paul Eggert.

1 files changed, 0 insertions, 68 deletions

diff --git a/gl/lib/regcomp.c.diff b/gl/lib/regcomp.c.diff
deleted file mode 100644
index 2f5107b10..000000000
--- a/gl/lib/regcomp.c.diff
+++ /dev/null
@@ -1,68 +0,0 @@
-diff --git i/lib/regcomp.c w/lib/regcomp.c
-index 6de9b72..bd069dd 100644
---- i/lib/regcomp.c
-+++ w/lib/regcomp.c
-@@ -523,8 +523,8 @@ weak_alias (__regcomp, regcomp)
-    from either regcomp or regexec.   We don't use PREG here.  */
-
- size_t
--regerror (int errcode, const regex_t *__restrict preg, char *__restrict errbuf,
--	  size_t errbuf_size)
-+regerror (int errcode, const regex_t *__restrict preg _UNUSED_PARAMETER_,
-+          char *__restrict errbuf, size_t errbuf_size)
- {
-   const char *msg;
-   size_t msg_size;
-@@ -1407,7 +1407,7 @@ calc_first (void *extra, bin_tree_t *node)
-
- /* Pass 2: compute NEXT on the tree.  Preorder visit.  */
- static reg_errcode_t
--calc_next (void *extra, bin_tree_t *node)
-+calc_next (void *extra _UNUSED_PARAMETER_, bin_tree_t *node)
- {
-   switch (node->token.type)
-     {
-@@ -2821,8 +2821,10 @@ build_range_exp (const reg_syntax_t syntax,
- static reg_errcode_t
- internal_function
- # ifdef RE_ENABLE_I18N
--build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
--			Idx *coll_sym_alloc, const unsigned char *name)
-+build_collating_symbol (bitset_t sbcset,
-+                        re_charset_t *mbcset _UNUSED_PARAMETER_,
-+                        Idx *coll_sym_alloc _UNUSED_PARAMETER_,
-+                        const unsigned char *name)
- # else /* not RE_ENABLE_I18N */
- build_collating_symbol (bitset_t sbcset, const unsigned char *name)
- # endif /* not RE_ENABLE_I18N */
-@@ -3392,7 +3394,8 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
-
- static reg_errcode_t
- parse_bracket_element (bracket_elem_t *elem, re_string_t *regexp,
--		       re_token_t *token, int token_len, re_dfa_t *dfa,
-+                       re_token_t *token, int token_len,
-+                       re_dfa_t *dfa _UNUSED_PARAMETER_,
- 		       reg_syntax_t syntax, bool accept_hyphen)
- {
- #ifdef RE_ENABLE_I18N
-@@ -3479,8 +3482,9 @@ parse_bracket_symbol (bracket_elem_t *elem, re_string_t *regexp,
-
- static reg_errcode_t
- #ifdef RE_ENABLE_I18N
--build_equiv_class (bitset_t sbcset, re_charset_t *mbcset,
--		   Idx *equiv_class_alloc, const unsigned char *name)
-+build_equiv_class (bitset_t sbcset, re_charset_t *mbcset _UNUSED_PARAMETER_,
-+                   Idx *equiv_class_alloc _UNUSED_PARAMETER_,
-+                   const unsigned char *name)
- #else /* not RE_ENABLE_I18N */
- build_equiv_class (bitset_t sbcset, const unsigned char *name)
- #endif /* not RE_ENABLE_I18N */
-@@ -3884,7 +3888,7 @@ free_token (re_token_t *node)
-    and its children. */
-
- static reg_errcode_t
--free_tree (void *extra, bin_tree_t *node)
-+free_tree (void *extra _UNUSED_PARAMETER_, bin_tree_t *node)
- {
-   free_token (&node->token);
-   return REG_NOERROR;