diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt
index f19f1bb3efb..2ee8fce3202 100644
--- a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt
@@ -226,53 +226,6 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
         }
     }
 
-    @Test
-    fun testBuildAndClean() {
-        val project = Project("kotlin2JsProject")
-
-        project.build("build") {
-            assertSuccessful()
-            assertReportExists()
-            checkIrCompilationMessage()
-
-            assertTasksExecuted(
-                ":libraryProject:jarSources",
-                ":mainProject:compileKotlin2Js",
-                ":libraryProject:compileKotlin2Js"
-            )
-
-            assertFileExists("mainProject/web/js/app.js")
-            if (!irBackend) {
-                assertFileExists("mainProject/web/js/lib/kotlin.js")
-                assertFileExists("libraryProject/build/kotlin2js/main/test-library.js")
-                assertFileExists("mainProject/web/js/app.js.map")
-            }
-        }
-
-        project.build("build") {
-            assertSuccessful()
-            assertTasksUpToDate(":mainProject:compileKotlin2Js")
-            assertContainsRegex(":libraryProject:compileTestKotlin2Js (UP-TO-DATE|NO-SOURCE)".toRegex())
-        }
-
-        project.build("clean") {
-            assertSuccessful()
-            assertReportExists()
-
-            // Test that we don't accidentally remove the containing directory
-            // This would fail if we used the default clean task of the copy task
-            assertFileExists("mainProject/web/js/lib")
-
-            assertNoSuchFile("main/project/web/js/app.js.map")
-            assertNoSuchFile("main/project/web/js/example/main.kt")
-        }
-
-        project.build("clean") {
-            assertSuccessful()
-            assertReportExists()
-        }
-    }
-
     @Test
     fun testJarIncludesJsDefaultOutput() {
         val project = Project("kotlin2JsNoOutputFileProject")
@@ -446,17 +399,6 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
         }
     }
 
-    /** Issue: KT-18495 */
-    @Test
-    fun testNoSeparateClassesDirWarning() {
-        val project = Project("kotlin2JsProject")
-        project.build("build") {
-            assertSuccessful()
-            checkIrCompilationMessage()
-            assertNotContains("this build assumes a single directory for all classes from a source set")
-        }
-    }
-
     @Test
     fun testIncrementalCompilation() = Project("kotlin2JsICProject").run {
         setupWorkingDir()