Allow multiuser use of keystore

Since keystore has been refactored to let muliple users use it
simultaneously, we can remove all the restrictions put into place to
prevent it.

Bug: 7249554
Change-Id: I5aa069ca439cea68e87e141c497be8cd86b0ba9d

src/com/android/settings/CredentialStorage.java

@@ -25,7 +25,6 @@ import android.content.res.Resources;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.RemoteException;
-import android.os.UserHandle;
 import android.security.Credentials;
 import android.security.KeyChain.KeyChainConnection;
 import android.security.KeyChain;
@@ -109,12 +108,6 @@ public final class CredentialStorage extends Activity {
     protected void onResume() {
         super.onResume();
 
-        if (UserHandle.myUserId() != UserHandle.USER_OWNER) {
-            Log.i(TAG, "Cannot install to CredentialStorage as non-primary user");
-            finish();
-            return;
-        }
-
         Intent intent = getIntent();
         String action = intent.getAction();