[Pill] Do not import modules with the 'FULL' variant

The 'FULL' variant proved to be hardly useful for everyday work.
This change is the first step of removing the variant support from Pill.

libraries/tools/kotlin-assignment/build.gradle.kts

@@ -1,12 +1,5 @@
-import org.jetbrains.kotlin.pill.PillExtension
-
 plugins {
     id("gradle-plugin-common-configuration")
-    id("jps-compatible")
-}
-
-pill {
-    variant = PillExtension.Variant.FULL
 }
 
 dependencies {