Created by: luotao1

• fix typo PADDDLE_ENFORCE to PADDLE_ENFORCE{_**}
• remove unused log to make CI cleaner http://ci.paddlepaddle.org/viewLog.html?buildId=241984&tab=buildLog&buildTypeId=YYTest_PrCiCpuPy2&logTab=tail

[07:53:04]	[Step 1/1] checking paddle/fluid/framework/selected_rows.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/op_desc.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/block_desc.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/var_desc.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/scope.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/ir/node.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/ir/graph.h change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking paddle/fluid/framework/framework.proto change, PR: 21575, changes: 
[07:53:04]	[Step 1/1] checking python/requirements.txt change, PR: 21575, changes: