Android: Remove unused GN variables extra_chrome_shared_library_*

* extra_chrome_shared_library_deps
* extra_chrome_shared_library_configs

These were used for orderfiles, but this logic has now been upstreamed.

Change-Id: I816fd48db22a2fecad2036f46c80bd5055a8b883
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1704384Reviewed-by: Benoit L <lizeb@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678563}

build/config/android/config.gni

@@ -63,13 +63,6 @@ if (is_android || is_chromeos) {
     }
   }
 
-  if (!defined(extra_chrome_shared_library_configs)) {
-    extra_chrome_shared_library_configs = []
-  }
-  if (!defined(extra_chrome_shared_library_deps)) {
-    extra_chrome_shared_library_deps = []
-  }
-
   if (!defined(default_android_ndk_root)) {
     default_android_ndk_root = "//third_party/android_ndk"
     default_android_ndk_version = "r16"

chrome/android/chrome_common_shared_library.gni

@@ -62,8 +62,6 @@ template("chrome_common_shared_library") {
     }
 
     configs += [ "//build/config/compiler:chrome_orderfile_config" ]
-    public_configs = extra_chrome_shared_library_configs
-    deps += extra_chrome_shared_library_deps
 
     # Use a dynamically-generated linker script.
     configs -= [ "//build/config/android:hide_all_but_jni_onload" ]