Remove deprecated mbregex aliases

These have been deprecated in PHP 7.3 as part of
https://wiki.php.net/rfc/deprecations_php_7_3.

Author: nikic

UPGRADING

@@ -46,6 +46,23 @@ PHP 8.0 UPGRADE NOTES
     also been removed. Finally, the "func_overload" and "func_overload_list"
     entries in mb_get_info() have been removed.
   . mb_parse_str() can no longer be used without specifying a result array.
+  . A number of deprecated mbregex aliases have been removed. See the following
+    list for which functions should be used instead:
+
+     * mbregex_encoding()      -> mb_regex_encoding()
+     * mbereg()                -> mb_ereg()
+     * mberegi()               -> mb_eregi()
+     * mbereg_replace()        -> mb_ereg_replace()
+     * mberegi_replace()       -> mb_eregi_replace()
+     * mbsplit()               -> mb_split()
+     * mbereg_match()          -> mb_ereg_match()
+     * mbereg_search()         -> mb_ereg_search()
+     * mbereg_search_pos()     -> mb_ereg_search_pos()
+     * mbereg_search_regs()    -> mb_ereg_search_regs()
+     * mbereg_search_init()    -> mb_ereg_search_init()
+     * mbereg_search_getregs() -> mb_ereg_search_getregs()
+     * mbereg_search_getpos()  -> mb_ereg_search_getpos()
+     * mbereg_search_setpos()  -> mb_ereg_search_setpos()
 
 - Standard:
   . assert() will no longer evaluate string arguments, instead they will be

ext/mbstring/php_mbregex.h

@@ -41,21 +41,7 @@
 	PHP_FE(mb_ereg_search_init,		arginfo_mb_ereg_search_init) \
 	PHP_FE(mb_ereg_search_getregs,	arginfo_mb_ereg_search_getregs) \
 	PHP_FE(mb_ereg_search_getpos,	arginfo_mb_ereg_search_getpos) \
-	PHP_FE(mb_ereg_search_setpos,	arginfo_mb_ereg_search_setpos) \
-	PHP_DEP_FALIAS(mbregex_encoding,	mb_regex_encoding,	arginfo_mb_regex_encoding) \
-	PHP_DEP_FALIAS(mbereg,	mb_ereg,	arginfo_mb_ereg) \
-	PHP_DEP_FALIAS(mberegi,	mb_eregi,	arginfo_mb_eregi) \
-	PHP_DEP_FALIAS(mbereg_replace,	mb_ereg_replace,	arginfo_mb_ereg_replace) \
-	PHP_DEP_FALIAS(mberegi_replace,	mb_eregi_replace,	arginfo_mb_eregi_replace) \
-	PHP_DEP_FALIAS(mbsplit,	mb_split,	arginfo_mb_split) \
-	PHP_DEP_FALIAS(mbereg_match,	mb_ereg_match,	arginfo_mb_ereg_match) \
-	PHP_DEP_FALIAS(mbereg_search,	mb_ereg_search,	arginfo_mb_ereg_search) \
-	PHP_DEP_FALIAS(mbereg_search_pos,	mb_ereg_search_pos,	arginfo_mb_ereg_search_pos) \
-	PHP_DEP_FALIAS(mbereg_search_regs,	mb_ereg_search_regs,	arginfo_mb_ereg_search_regs) \
-	PHP_DEP_FALIAS(mbereg_search_init,	mb_ereg_search_init,	arginfo_mb_ereg_search_init) \
-	PHP_DEP_FALIAS(mbereg_search_getregs,	mb_ereg_search_getregs,	arginfo_mb_ereg_search_getregs) \
-	PHP_DEP_FALIAS(mbereg_search_getpos,	mb_ereg_search_getpos,	arginfo_mb_ereg_search_getpos) \
-	PHP_DEP_FALIAS(mbereg_search_setpos,	mb_ereg_search_setpos,	arginfo_mb_ereg_search_setpos)
+	PHP_FE(mb_ereg_search_setpos,	arginfo_mb_ereg_search_setpos)
 /* }}} */
 
 #define PHP_MBREGEX_MAXCACHE 50