com.android.mediadrm.signer is built with java_sdk_library

The com.android.mediadrm.signer is built with java_sdk_library
and api files are added by running "make update-api".
The com.android.mediadrm.signer is removed in platform.xml
since it will be made auto generation by soong when the library is
built with java_sdk_library.

Bug:77577799
Test: make -j
Test: make checkapi
Test: adb shell cmd package list libraries |\
      grep com.android.mediadrm.signer
      And check the com.android.mediadrm.signer library

Merged-In: I0e773615abe6aa8d757e489de2b9d807cd356146
Change-Id: I0e773615abe6aa8d757e489de2b9d807cd356146
(cherry picked from commit 2e1089bae43fe327346c531fcbdd4cc5d1664b14)
diff --git a/CleanSpec.mk b/CleanSpec.mk
index 2e949c5..9e172e7 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -244,6 +244,7 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/framework_intermediates/core/java/android/os/storage/*)
 $(call add-clean-step, rm -rf $(OUT_DIR)/host/common/obj/JAVA_LIBRARIES/platformprotos_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/statsdprotolite_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/framework/com.android.mediadrm.signer.jar)
 # ******************************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST ABOVE THIS BANNER
 # ******************************************************************