fix android gradle for only java project

android/build.gradle

@@ -2,13 +2,15 @@ group 'top.kikt.ijkplayer'
 version '1.0-SNAPSHOT'
 
 buildscript {
+    ext.kotlin_version = '1.3.21'
     repositories {
         google()
         jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.1'
+        classpath 'com.android.tools.build:gradle:3.3.2'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
@@ -20,7 +22,6 @@ rootProject.allprojects {
 }
 
 apply plugin: 'com.android.library'
-apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-android'
 
 android {
@@ -28,7 +29,6 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     lintOptions {
         disable 'InvalidPackage'

example/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.1'
+        classpath 'com.android.tools.build:gradle:3.3.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }