Remove .prod from the applicationIdSuffix in preparation for Play launch

Change-Id: I30f7120bf6ce3f101ca9fc1ad28d3cecf2048f9a

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/NiaFlavor.kt

@@ -16,8 +16,8 @@ enum class FlavorDimension {
 // These two product flavors reflect this behaviour.
 @Suppress("EnumEntryName")
 enum class NiaFlavor(val dimension: FlavorDimension, val applicationIdSuffix: String? = null) {
-    demo(FlavorDimension.contentType),
+    demo(FlavorDimension.contentType, applicationIdSuffix = ".demo"),
-    prod(FlavorDimension.contentType, ".prod")
+    prod(FlavorDimension.contentType, )
 }
 
 fun Project.configureFlavors(