Remove references to kernel macros.

The macros __force, __bitwise, __user are related to a kernel tool called
sparse to find kernel bugs. These macros are always defined as nothing
in the current uapi kernel header files, so these don't need to be here.

Change-Id: Ia29b0ddbe80298dc19b170c927f1910e14af2c6b
Test: Builds without warnings/errors.
1 file changed