Build: Remove shadow jar task from custom-deps/intellij-sdk project

buildSrc/prepare-deps/intellij-sdk/build.gradle.kts

@@ -1,4 +1,3 @@
-
 @file:Suppress("PropertyName")
 
 import org.gradle.api.publish.ivy.internal.artifact.FileBasedIvyArtifact
@@ -7,16 +6,7 @@ import org.gradle.api.publish.ivy.internal.publication.DefaultIvyPublicationIden
 import org.gradle.api.publish.ivy.internal.publisher.IvyDescriptorFileGenerator
 import java.io.File
 import org.gradle.internal.os.OperatingSystem
-import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 
-buildscript {
-    repositories {
-        jcenter()
-    }
-    dependencies {
-        classpath("com.github.jengelman.gradle.plugins:shadow:${property("versions.shadow")}")
-    }
-}
 
 val intellijUltimateEnabled: Boolean by rootProject.extra
 val intellijRepo: String by rootProject.extra
@@ -152,12 +142,9 @@ val unzipIntellijCore by tasks.creating { configureExtractFromConfigurationTask(
 
 val unzipJpsStandalone by tasks.creating { configureExtractFromConfigurationTask(`jps-standalone`) { zipTree(it.singleFile) } }
 
-val copyIntellijSdkSources by tasks.creating(ShadowJar::class.java) {
+val copyIntellijSdkSources by tasks.creating(Copy::class.java) {
     from(sources)
-    baseName = "ideaIC"
-    version = intellijVersion
-    classifier = "sources"
-    destinationDir = File(repoDir, sources.name)
+    into(File(repoDir, sources.name))
 }
 
 val copyJpsBuildTest by tasks.creating { configureExtractFromConfigurationTask(`jps-build-test`) { it.singleFile } }