Remove redundant karma-source-map-support

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/NpmVersions.kt

@@ -41,7 +41,6 @@ class NpmVersions {
     val karmaCoverage = NpmPackageVersion("karma-coverage", "1.1.2")
 
     val karmaSourceMapLoader = NpmPackageVersion("karma-sourcemap-loader", "0.3.7")
-    val karmaSourceMapSupport = NpmPackageVersion("karma-source-map-support", "1.4.0")
 
     val browserProcessHrtime = NpmPackageVersion("browser-process-hrtime", "1.0.0")
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt

@@ -323,10 +323,6 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
         requiredDependencies.add(versions.karmaSourceMapLoader)
         sourceMaps = true
         addPreprocessor("sourcemap")
-
-        // stacktraces with sourcemaps
-        requiredDependencies.add(versions.karmaSourceMapSupport)
-        config.frameworks.add("source-map-support")
     }
 
     private fun addPreprocessor(name: String, predicate: (String) -> Boolean = { true }) {