Simplify code

Author: rlazo

plugins/src/main/java/com/google/firebase/gradle/plugins/MakeReleaseNotesTask.kt

@@ -106,7 +106,7 @@ abstract class MakeReleaseNotesTask : DefaultTask() {
 
     val versionClassifier = version.replace(".", "-")
 
-    val baseReleaseNotes =
+    val releaseNotes =
       """
         |### ${config.name.get()} version $version {: #${config.versionName.get()}_v$versionClassifier}
         |
@@ -115,14 +115,6 @@ abstract class MakeReleaseNotesTask : DefaultTask() {
         .trimMargin()
         .trim()
 
-    val releaseNotes =
-      """
-        |$baseReleaseNotes
-        |
-      """
-        .trimMargin()
-        .trim()
-
     releaseNotesFile.asFile.get().writeText(releaseNotes + "\n")
   }