opencv: disable broken Intel FP16 detection

With opencv-3.2, the configuration detects if the target supports
half-precision floating-point format. This fails to compile for some
Intel targets such as skylake with an error such as:
   error: '_mm_cvtph_ps' was not declared in this scope

The configuration worked in opencv-3.1 so revert two commits to
drop the FP16 detection even though it may make opencv slower.
The only change in the configure log is:

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

0 files changed, 0 insertions, 0 deletions