[#18] remove ide specific plugins from gradle build

Author: billkable

lab/build.gradle

@@ -59,12 +59,4 @@ subprojects {
         useJUnitPlatform()
     }
 
-    apply plugin: 'idea'
-
-    idea {
-        module {
-            downloadJavadoc = true
-            downloadSources = true
-        }
-    }
 }