[Android] Uma parameter was removed from NewTabPage.initializeMainView

Related Chromium change:
https://source.chromium.org/chromium/chromium/src/+/560a9bb2a389f708d7c29eb486fd4009e51fd837

	Remove unused uma from NTP#initializeMainView.

	Change-Id: I4ec01cb4f1361981a0cbb4397fc4008ac9c412d2
	Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5861609

android/java/org/chromium/chrome/browser/ntp/BraveNewTabPage.java

@@ -127,7 +127,6 @@ public class BraveNewTabPage extends NewTabPage {
             Activity activity,
             WindowAndroid windowAndroid,
             SnackbarManager snackbarManager,
-            NewTabPageUma uma,
             boolean isInNightMode,
             Supplier<ShareDelegate> shareDelegateSupplier,
             String url) {