Replace with OpenCV library

[LeeHayun]

Currently, ANT uses modified OpenCV library for face detection.
However, as the ML framework was developed, I thought that it would be appropriate for face detection to be included in the ML framework.
There are some advantages.

Advantages

• 'gitmodule' run time is reduced.
• Execution time of intall-deps-*.sh is significantly reduced. (Because building OpenCV takes a considerable amount of time.) Reduce the execution time of install-deps-*.sh #7
• The dependencies between OpenCV library and ANT can be solved.

Plan

• Replace building the modified OpenCV with the OpenCV package installation
• Add face detection to the ML framework

[RedCarrottt]

👍

[RedCarrottt]

OpenCV library has already removed from ANT project.
If someone wants to implement face detection app, Stream API or ML API can be used.

Therfore, I close this issue.