Bass: Fix parsing BaseData Codec ID

BAP specification requires the codec ID to be 5 octets long. There is no
such thing as shortened (1 octet in size) codec ID with value 0xFE.
This removes the confusing code that will never be executed with BAP
compliant BASE advertisings.

Bug: 328181940
Test: atest BluetoothInstrumentationTests
Flag: EXEMPT; Removes dead code
Change-Id: I16ec4934c01a3a244d5f0c9e96217c5d6e42ba8f