移除Zframework，准备使用submodule

Zframework/log.lua

@@ -1,20 +0,0 @@
-local ins=table.insert
-
-local logs={os.date("Techmino logs  %Y/%m/%d %A")}
-
-local function log(message)
-    ins(logs,os.date("[%H:%M:%S] ")..message)
-end
-
-local LOG=setmetatable({logs=logs},{
-    __call=function(_,message)
-        print(message)
-        log(message)
-    end
-})
-
-function LOG.read()
-    return table.concat(logs,"\n")
-end
-
-return LOG