Fixed build error

android/build.gradle

@@ -1,3 +1,16 @@
+buildscript {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        google()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
+        jcenter()
+    }
+    
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.2.1'
+    }
+}
 
 apply plugin: "com.android.application"
 

build.gradle

@@ -9,7 +9,6 @@ buildscript {
     dependencies {
         classpath 'com.mobidevelop.robovm:robovm-gradle-plugin:2.3.0'
         classpath 'de.richsource.gradle.plugins:gwt-gradle-plugin:0.6'
-        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "com.badlogicgames.gdx:gdx-tools:1.9.8"
     }
 }

core/src/io/anuke/mindustry/world/modules/BlockModule.java

@@ -7,6 +7,5 @@ import java.io.IOException;
 /**A class that represents compartmentalized tile entity state.*/
 public abstract class BlockModule{
     public abstract void write(DataOutput stream) throws IOException;
-
     public abstract void read(DataInput stream) throws IOException;
 }