🔥 Remove GCC extension warning

Use of the extension itself was removed in 61aae30

Author: elbeno

CMakeLists.txt

@@ -25,10 +25,7 @@ add_library(stdx INTERFACE)
 target_include_directories(stdx INTERFACE include)
 target_compile_features(stdx INTERFACE cxx_std_${CMAKE_CXX_STANDARD})
 target_compile_options(
-    stdx
-    INTERFACE
-        $<$<CXX_COMPILER_ID:Clang>:-Wno-gnu-string-literal-operator-template>
-        $<$<CXX_COMPILER_ID:Clang>:-Wno-missing-braces>)
+    stdx INTERFACE $<$<CXX_COMPILER_ID:Clang>:-Wno-missing-braces>)
 target_link_libraries_system(stdx INTERFACE boost_mp11 fmt::fmt-header-only)
 
 if(PROJECT_IS_TOP_LEVEL)