Remove unused compile-dep from sdk/android:base_java target

Bug: None
Change-Id: I0b9715464d4428966c5c53cc9fafb6762aae0d86
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168764
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30555}

sdk/android/BUILD.gn

@@ -172,7 +172,6 @@ if (is_android) {
     ]
 
     deps = [
-      "//rtc_base:base_java",
       "//third_party/android_deps:com_android_support_support_annotations_java",
     ]
   }