Gradle: deprecate application plugin, #46

vtm-playground/build.gradle

@@ -1,5 +1,4 @@
 apply plugin: 'java'
-apply plugin: 'application'
 
 dependencies {
     compile project(':vtm-desktop')
@@ -17,6 +16,3 @@ sourceSets {
         resources.srcDirs = ['resources']
     }
 }
-
-mainClassName = 'org.oscim.gdx.GdxMapApp'
-run { ignoreExitValue = true }