fix(ci): simplify build.gradle.kts, signing handled by CI key.properties

android/app/build.gradle.kts

@@ -4,13 +4,6 @@ plugins {
     id("dev.flutter.flutter-gradle-plugin")
 }
 
-val keystorePropertiesFile = rootProject.file("key.properties")
-val keystoreProperties = java.util.Properties().apply {
-    if (keystorePropertiesFile.exists()) {
-        load(keystorePropertiesFile.inputStream())
-    }
-}
-
 android {
     namespace = "es.freetimelab.farolero.game"
     compileSdk = flutter.compileSdkVersion
@@ -33,24 +26,9 @@ android {
         versionName = flutter.versionName
     }
 
-    signingConfigs {
-        create("release") {
-            if (keystorePropertiesFile.exists()) {
-                keyAlias = keystoreProperties["keyAlias"] as String?
-                keyPassword = keystoreProperties["keyPassword"] as String?
-                storeFile = keystoreProperties["storeFile"]?.let { file(it) }
-                storePassword = keystoreProperties["storePassword"] as String?
-            }
-        }
-    }
-
     buildTypes {
         release {
-            signingConfig = if (keystorePropertiesFile.exists()) {
+            signingConfig = signingConfigs.getByName("debug")
-                signingConfigs.getByName("release")
-            } else {
-                signingConfigs.getByName("debug")
-            }
         }
     }
 }