xray-core: strip binary with -ldflags

xray-core/Makefile

@@ -17,6 +17,7 @@ PKG_BUILD_PARALLEL:=1
 PKG_USE_MIPS16:=0
 
 GO_PKG:=github.com/xtls/xray-core
+GO_PKG_LDFLAGS:=-s -w
 GO_PKG_BUILD_PKG:=$(GO_PKG)/main
 GO_PKG_LDFLAGS_X:= \
 	$(GO_PKG)/core.build=OpenWrt \