build: don't build SDK or javadoc

gradle.properties

@@ -8,10 +8,10 @@ jmeVersionTag = SNAPSHOT
 jmeVersionTagID = 0
 
 # specify if JavaDoc should be built
-buildJavaDoc = true
+buildJavaDoc = false
 
 # specify if SDK and Native libraries get built
-buildSdkProject = true
+buildSdkProject = false
 buildNativeProjects = false
 buildAndroidExamples = false