Remove duplicate strings.

"Yes" and "no" were redefined many times with no clear benefit, so this
consolidates them into one definition.

Bug: 243843096
Test: Build, install, and open the Settings app
Test: atest SettingsRoboTests
Change-Id: I5f84d09f223efd478461ded93aeac82bf7b128d8

src/com/android/settings/connecteddevice/NfcAndPaymentFragmentController.java

@@ -54,9 +54,9 @@ public class NfcAndPaymentFragmentController extends BasePreferenceController {
     public CharSequence getSummary() {
         if (mNfcAdapter != null) {
             if (mNfcAdapter.isEnabled()) {
-                return mContext.getText(R.string.nfc_setting_on);
+                return mContext.getText(R.string.on);
             } else {
-                return mContext.getText(R.string.nfc_setting_off);
+                return mContext.getText(R.string.off);
             }
         }
         return null;