Major OMX cleanup. Remove unneeded duplicates and unneeded files in the STE folder

Those duplicates mess up the STE ENS Loader, as shown by the logcat errors below:

W/ENSLoader( 1788): /system/lib/ste_omxcomponents/libspeech_processing.so is not loadable by STE ENS component loader
E/ENSLoader( 1788): failed to load /system/lib/ste_omxcomponents/libstagefright_soft_ste_aacdec.so: Cannot load library: find_library(linker.cpp:927): "/system/lib/ste_omxcomponents/libstagefright_soft_ste_aacdec.so" failed to load previously
W/ENSLoader( 1788): /system/lib/ste_omxcomponents/libstagefright_soft_ste_mp3dec.so is not loadable by STE ENS component loader
W/ENSLoader( 1788): /system/lib/ste_omxcomponents/libstagefright_ste_aacdec.so is not loadable by STE ENS component loader
W/ENSLoader( 1788): /system/lib/ste_omxcomponents/libstagefright_ste_mp3decode.so is not loadable by STE ENS component loader

Not sure if you guys are still working on 4.1.2, but if so, a similar change is needed there.