refactor: remove FindRegex.cmake

cmake/FindRegex.cmake

@@ -1,50 +0,0 @@
-# - Try to find the Regex library
-#
-# Once done this will define
-#
-#  REGEX_FOUND       - system has libregex
-#  REGEX_INCLUDE_DIR - the libregex include directory
-#  REGEX_LIBRARIES   - Link these to use libregex
-#
-# Copyright (c) 2018, Gilles Caulier, <caulier dot gilles at gmail dot com>
-#
-# Redistribution and use is allowed according to the terms of the BSD license.
-# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
-
-if ( NOT MSVC AND NOT MINGW AND NOT MSYS )
-    find_path(Regex_INCLUDE_DIR
-              NAMES regex.h
-              DOC "libregex include directory"
-    )
-
-    mark_as_advanced(Regex_INCLUDE_DIR)
-
-    find_library(Regex_LIBRARY "regex"
-                 DOC "libregex libraries"
-    )
-
-    mark_as_advanced(Regex_LIBRARY)
-
-    find_package_handle_standard_args(Regex
-                                      FOUND_VAR Regex_FOUND
-                                      REQUIRED_VARS Regex_INCLUDE_DIR
-                                      FAIL_MESSAGE "Failed to find libregex"
-    )
-
-    if(REGEX_FOUND)
-
-        set(REGEX_INCLUDE_DIRS ${Regex_INCLUDE_DIRS})
-
-        if(Regex_LIBRARY)
-
-            set(REGEX_LIBRARIES ${Regex_LIBRARY})
-
-        else()
-
-            unset(REGEX_LIBRARIES)
-
-        endif()
-
-    endif()
-endif()
-