commit 2e1089bae43fe327346c531fcbdd4cc5d1664b14
author Sundong Ahn <sundongahn@google.com> Thu May 24 17:18:12 2018 +0900
committer Sundong Ahn <sundongahn@google.com> Fri May 25 13:42:57 2018 +0900
tree 33a798a0f04d9cb7d2efb966da0bed19bad178c1
parent 48dca340364bd2cee381082c374bec9e91b791ab

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

Change-Id: I0e773615abe6aa8d757e489de2b9d807cd356146