Fixes and move to jvmDemo (#286)

orx-shade-styles/build.gradle.kts

@@ -1,21 +1,8 @@
-import ScreenshotsHelper.collectScreenshots
-
 plugins {
     org.openrndr.extra.convention.`kotlin-multiplatform`
 }
 
 kotlin {
-    jvm {
-        @Suppress("UNUSED_VARIABLE")
-        val demo by compilations.getting {
-            // TODO: Move demos to /jvmDemo
-            defaultSourceSet {
-                kotlin.srcDir("src/demo/kotlin")
-            }
-            collectScreenshots { }
-        }
-    }
-
     sourceSets {
         @Suppress("UNUSED_VARIABLE")
         val commonMain by getting {
@@ -30,7 +17,6 @@ kotlin {
             }
         }
 
-
         @Suppress("UNUSED_VARIABLE")
         val jvmDemo by getting {
             dependencies {