堆积模式移出地图，删除h难度

parts/modes/stack_e.lua

@@ -8,17 +8,4 @@ return{
         eventSet='stack_e',
         bg='blockrain',bgm='there',
     },
-    score=function(P)return{P.stat.row,P.stat.time}end,
-    scoreDisp=function(D)return D[1].." Lines".."   "..STRING.time(D[2])end,
-    comp=function(a,b)return a[1]>b[1]or a[1]==b[1]and a[2]<b[2]end,
-    getRank=function(P)
-        local L=P.stat.row
-        return
-        L>=200 and 5 or
-        L>=175 and 4 or
-        L>=150 and 3 or
-        L>=120 and 2 or
-        L>=90 and 1 or
-        L>=30 and 0
-    end,
 }