remove msys from makefile

Author: Gioee

Makefile

@@ -244,11 +244,7 @@ $(CURL_LIB):
 	# --without-zsh-functions-dir \
 	# --without-libgsasl \
 	
-    ifeq ($(PLATFORM),windows)
-	msys2 "cd $(CURL_SRC) && make"
-    else
 	cd $(CURL_SRC) && make
-    endif
 
 	mkdir -p $(CURL_DIR)/$(PLATFORM)
 	mv $(CURL_SRC)/lib/.libs/libcurl.a $(CURL_DIR)/$(PLATFORM)