Remove library versions from sub modules

plugin-9patch/build.gradle

@@ -5,13 +5,6 @@ plugins {
 group 'games.rednblack'
 version '0.0.1'
 
-ext {
-    gdxVersion = '1.9.10'
-    box2DLightsVersion = '1.5'
-    ashleyVersion = '1.7.3'
-    visUIVersion = '1.4.5-SNAPSHOT'
-}
-
 repositories {
     mavenCentral()
     maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
@@ -20,7 +13,7 @@ repositories {
 dependencies {
     implementation "com.badlogicgames.gdx:gdx:$gdxVersion"
     implementation "com.badlogicgames.ashley:ashley:$ashleyVersion"
-    implementation "com.kotcrab.vis:vis-ui:$visUIVersion"
+    implementation "com.kotcrab.vis:vis-ui:$visuiVersion"
 
     implementation 'net.mountainblade:modular:1.0'