remove fixed code

see http://www.lua.org/bugs.html#5.4.4-7

Author: sumneko

script/workspace/workspace.lua

@@ -471,8 +471,6 @@ function m.flushFiles(scp)
     end
     collectgarbage()
     collectgarbage()
-    -- TODO: wait maillist
-    collectgarbage 'restart'
 end
 
 ---@param scp scope