fixes for comments

Author: David Motsonashvili

firebase-ai/src/main/kotlin/com/google/firebase/ai/TemplateImagenModel.kt

@@ -97,7 +97,5 @@ internal constructor(
 
   internal companion object {
     private val TAG = TemplateImagenModel::class.java.simpleName
-    internal const val DEFAULT_FILTERED_ERROR =
-      "Unable to show generated images. All images were filtered out because they violated Vertex AI's usage guidelines. You will not be charged for blocked images. Try rephrasing the prompt. If you think this was an error, send feedback."
   }
 }

firebase-ai/src/main/kotlin/com/google/firebase/ai/java/TemplateGenerativeModelFutures.kt

@@ -19,7 +19,6 @@ package com.google.firebase.ai.java
 import androidx.concurrent.futures.SuspendToFutureAdapter
 import com.google.common.util.concurrent.ListenableFuture
 import com.google.firebase.ai.TemplateGenerativeModel
-import com.google.firebase.ai.java.ImagenModelFutures.FuturesImpl
 import com.google.firebase.ai.type.FirebaseAIException
 import com.google.firebase.ai.type.GenerateContentResponse
 import com.google.firebase.ai.type.PublicPreviewAPI

firebase-ai/src/main/kotlin/com/google/firebase/ai/java/TemplateImagenModelFutures.kt

@@ -19,7 +19,6 @@ package com.google.firebase.ai.java
 import androidx.concurrent.futures.SuspendToFutureAdapter
 import com.google.common.util.concurrent.ListenableFuture
 import com.google.firebase.ai.TemplateImagenModel
-import com.google.firebase.ai.java.ImagenModelFutures.FuturesImpl
 import com.google.firebase.ai.type.ImagenGenerationResponse
 import com.google.firebase.ai.type.ImagenInlineImage
 import com.google.firebase.ai.type.PublicPreviewAPI