linker.config.json: remove libpac.so.

The bug in the TODO was fixed 5 years ago, so this should be
obsolete?

Change-Id: I636adccb9852170a00ea171dd96e2f176bf70489
diff --git a/rootdir/etc/linker.config.json b/rootdir/etc/linker.config.json
index 61af6e9..8b3542f 100644
--- a/rootdir/etc/linker.config.json
+++ b/rootdir/etc/linker.config.json
@@ -9,8 +9,6 @@
     "libnativehelper.so",
     "libnativeloader.so",
     "libsigchain.so",
-    // TODO(b/122876336): Remove libpac.so once it's migrated to Webview
-    "libpac.so",
     // TODO(b/120786417 or b/134659294): libicuuc.so
     // and libicui18n.so are kept for app compat.
     "libicui18n.so",