移除Zframework，准备使用submodule

Zframework/require.lua

@@ -1,33 +0,0 @@
-package.cpath=package.cpath..';'..SAVEDIR..'/lib/lib?.so;'..'?.dylib'
-local loaded={}
-return function(libName)
-    local require=require
-    if love.system.getOS()=='OS X'then
-        require=package.loadlib(libName..'.dylib','luaopen_'..libName)
-        libname=nil
-    elseif love.system.getOS()=='Android'then
-        if not loaded[libName]then
-            local platform=(function()
-                local p=io.popen('uname -m')
-                local arch=p:read('*a'):lower()
-                p:close()
-                if arch:find('v8')or arch:find('64')then
-                    return'arm64-v8a'
-                else
-                    return'armeabi-v7a'
-                end
-            end)()
-            love.filesystem.write(
-                'lib/libCCloader.so',
-                love.filesystem.read('data','libAndroid/'..platform..'/libCCloader.so')
-            )
-            loaded[libName]=true
-        end
-    end
-    local success,res=pcall(require,libName)
-    if success and res then
-        return res
-    else
-        MES.new('error',"Cannot load "..libName..": "..res)
-    end
-end