gradle: remove unused buck configuration

Signed-off-by: Jakub Sokołowski <jakub@status.im>

android/app/build.gradle

@@ -313,36 +313,4 @@ dependencies {
     implementation 'com.facebook.fresco:animated-gif:2.0.0'
 }
 
-def getLocalNDKDir = { ->
-    def rootDir = project.rootDir
-    def localProperties = new File(rootDir, "local.properties")
-    if (!localProperties.exists()) {
-        return null
-    }
-    Properties properties = new Properties()
-    localProperties.withInputStream { instr ->
-        properties.load(instr)
-    }
-    return properties.getProperty('ndk.dir')
-}
-
-// Run this once to be able to run the application with BUCK
-// puts all compile dependencies into folder libs for BUCK to use
-task hemroidBuild(type: Exec) {
-    def localNdkDir = getLocalNDKDir()
-    def ndkDir = System.env.ANDROID_NDK
-    if (localNdkDir != null) {
-        ndkDir = localNdkDir 
-    }
-
-    def execPath = "$ndkDir/ndk-build"
-    def exec = new File(execPath)
-    if (!exec.exists()) {
-        throw new GradleException("No ndk-build binary found!")
-    }
-    executable execPath
-}
-
-preBuild.dependsOn hemroidBuild
-
 apply from: file("../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesAppBuildGradle(project)