fluid/platform/float16 cyclically depends on fluid/framework

[wangkuiyi]

Due to the line

Paddle/paddle/fluid/platform/float16.h

Line 70 in c413c46

#include "paddle/fluid/framework/eigen.h"

[kexinzhao]

This issue has been discussed before in #10587 (review).

If we want to make the fix pass, we may need to disable the some test in tensor_util_test and risk some util functions have segmentation fault when running.

After discussion with @wangkuiyi, we close this issue for now.