Inline EncoderUtil.findCodecForFormat

The method was removed in Media3 1.6.0, but the usage with
"decoder=true" on API > 21 the call can be inlined easily.

Bug: 396607254
Test: N/A
Change-Id: I61af3ce52442b5467bb31a346b98e93b4813080c
Flag: EXEMPT prebuilt update
1 file changed