selftests: amd-pstate: Don't delete source files via Makefile

Revert the portion of a recent Makefile change that incorrectly
deletes source files when doing "make clean".

Fixes: ba2d788a ("selftests: amd-pstate: Trigger tbench benchmark and test cpus")
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/amd-pstate/Makefile

@@ -7,11 +7,6 @@ all:
 uname_M := $(shell uname -m 2>/dev/null || echo not)
 ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
 
-ifeq (x86,$(ARCH))
-TEST_GEN_FILES += ../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py
-TEST_GEN_FILES += ../../../power/x86/intel_pstate_tracer/intel_pstate_tracer.py
-endif
-
 TEST_PROGS := run.sh
 TEST_FILES := basic.sh tbench.sh gitsource.sh