Potential fix for Win32 build

It seems in one of rebases I’ve resolved conflicts wrong and left one redundant line, it is absent in current master and it might cause compilation failure by copying file into itself.

Author: vhbit

mk/rt.mk

@@ -217,7 +217,6 @@ $$(LIBUV_LOCAL_$(1)): $$(LIBUV_DEPS) $$(MKFILE_DEPS)
 		CXX="$$(CXX_$(1))" \
 		AR="$$(AR_$(1))" \
 		V=$$(VERBOSE)
-	$$(Q)cp $$(S)src/libuv/libuv.a $$@
 else ifeq ($(OSTYPE_$(1)), apple-ios) # iOS
 $$(LIBUV_XCODEPROJ_$(1)): $$(LIBUV_DEPS) $$(MKFILE_DEPS) $$(LIBUV_STAMP_$(1))
 	cp -rf $(S)src/libuv/ $$(LIBUV_BUILD_DIR_$(1))