Revert "perf powerpc: Add encodings to represent data based on newer composite PERF_M...

Revert "perf powerpc: Add encodings to represent data based on newer composite PERF_MEM_LVLNUM* fields"

This was in a patchkit mixing up kernel with tools/ parts and I
mistakenly got it merged in the perf tools tree, revert it, it'll go via
the PowerPC kernel tree.

This reverts commit 56f7add1b8ca3bab8cafa240ac33f0db19119ac7.

Cc: kajoljain <kjain@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lore.kernel.org/lkml/20220112171659.531d22ce@canb.auug.org.au
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>