Remove AppBannerManager code to skip secure context checks for tests.

chrome/browser/android/banners/app_banner_manager_android.cc

Index: chrome/browser/android/banners/app_banner_manager_android.cc
diff --git a/chrome/browser/android/banners/app_banner_manager_android.cc b/chrome/browser/android/banners/app_banner_manager_android.cc
index 7d2c80b400efd9ade1db5e1b362ebf5fc0fd36df..ce373c3ef03aebfdc84df61461cfcd70811986f5 100644
--- a/chrome/browser/android/banners/app_banner_manager_android.cc
+++ b/chrome/browser/android/banners/app_banner_manager_android.cc
@@ -299,12 +299,6 @@ ScopedJavaLocalRef<jobject> GetJavaBannerManagerForWebContents(
 }
 
 // static
-void DisableSecureSchemeCheckForTesting(JNIEnv* env,
-                                        const JavaParamRef<jclass>& clazz) {
-  AppBannerManager::DisableSecureSchemeCheckForTesting();
-}
-
-// static
 void SetEngagementWeights(JNIEnv* env,
                           const JavaParamRef<jclass>& clazz,
                           jdouble direct_engagement,