remove judgement, only use cmake function

Author: jyu49

cmakelib/QuickCppLibUtils.cmake

@@ -53,25 +53,8 @@ endfunction()
 
 # Emulate list(FILTER list INCLUDE|EXCLUDE REGEX regex) on cmake < 3.6
 function(list_filter listname op regexqualifer regex)
-  if(CMAKE_VERSION VERSION_GREATER 3.59)
-    list(FILTER ${ARGV})
-    set(${listname} ${${listname}} PARENT_SCOPE)
-  else()
-    set(out)
-    foreach(item ${${listname}})
-      string(REGEX MATCH "${regex}" match ${item})
-      if("${op}" STREQUAL "INCLUDE")
-        if(match)
-          list(APPEND out ${item})
-        endif()
-      else()
-        if(NOT match)
-          list(APPEND out ${item})
-        endif()
-      endif()
-    endforeach()
-    set(${listname} ${out} PARENT_SCOPE)
-  endif()
+  list(FILTER ${ARGV})
+  set(${listname} ${${listname}} PARENT_SCOPE)
 endfunction()
 
 # Escape a string into a regex matching that string