irrlicht: remove XBPS_GCC_* usage

srcpkgs/irrlicht/template

@@ -12,11 +12,6 @@ distfiles="${SOURCEFORGE_SITE}/${pkgname}/${pkgname}-${version}.zip"
 checksum=f42b280bc608e545b820206fe2a999c55f290de5c7509a02bdbeeccc1bf9e433
 CPPFLAGS="-DPNG_ARM_NEON_OPT=0"
 
-if [ ${XBPS_GCC_VERSION_MAJOR} -gt 5 ]; then
-	CXXFLAGS="-Wno-error=narrowing"
-fi
-
-
 pre_build() {
 	cd source/Irrlicht
 	for file in COpenGLExtensionHandler.h glext.h glxext.h wglext.h; do
@@ -28,11 +23,13 @@ pre_build() {
 				-i ${wrksrc}/source/Irrlicht/COSOperator.cpp
 	esac
 }
+
 do_build() {
 	cd ${wrksrc}/source/Irrlicht
 	make ${makejobs} NDEBUG=1 sharedlib
 	make ${makejobs} NDEBUG=1
 }
+
 do_install() {
 	cd source/Irrlicht