Main: Remove leftover test files in lib_util (test_mdct.c, test_fft.c)
# Basic info
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- Fixed point: 3782eb0894b03cd80360eb30decd2981de1a9771
# Bug description
The main branch has several test files which seem to be leftovers. These should be removed:
- https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/blob/main/lib_util/test_mdct.c
- https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/blob/main/lib_util/test_fft.c
- https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/blob/main/lib_util/test_fft.h
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issue