diff --git a/compiler/testData/codegen/box/delegatedProperty/local/iinc.kt b/compiler/testData/codegen/box/delegatedProperty/local/iinc.kt
deleted file mode 100644
index 1e80caf7a26..00000000000
--- a/compiler/testData/codegen/box/delegatedProperty/local/iinc.kt
+++ /dev/null
@@ -1,17 +0,0 @@
-import kotlin.reflect.KProperty
-
-class Delegate {
-    var inner = 1
-    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) {
-        inner = i
-    }
-}
-
-fun box(): String {
-    var prop: Int by Delegate()
-    var result = prop++
-    if (result != 1) return "fail increment result: $prop"
-    if (prop != 2) return "fail increment: $prop"
-    return "OK"
-}
diff --git a/compiler/testData/codegen/box/delegatedProperty/local/plusAssign.kt b/compiler/testData/codegen/box/delegatedProperty/local/plusAssign.kt
deleted file mode 100644
index 7b9997b6316..00000000000
--- a/compiler/testData/codegen/box/delegatedProperty/local/plusAssign.kt
+++ /dev/null
@@ -1,16 +0,0 @@
-import kotlin.reflect.KProperty
-
-class Delegate {
-    var inner = 1
-    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) {
-        inner = i
-    }
-}
-
-fun box(): String {
-    var prop: Int by Delegate()
-    prop += 1
-    if (prop != 2) return "fail : $prop"
-    return "OK"
-}
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
index ca1db8dd618..a552d366272 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
@@ -5262,12 +5262,6 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
                 doTest(fileName);
             }
 
-            @TestMetadata("iinc.kt")
-            public void testIinc() throws Exception {
-                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/delegatedProperty/local/iinc.kt");
-                doTest(fileName);
-            }
-
             @TestMetadata("inlineGetValue.kt")
             public void testInlineGetValue() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/delegatedProperty/local/inlineGetValue.kt");
@@ -5291,12 +5285,6 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/delegatedProperty/local/localVar.kt");
                 doTest(fileName);
             }
-
-            @TestMetadata("plusAssign.kt")
-            public void testPlusAssign() throws Exception {
-                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/delegatedProperty/local/plusAssign.kt");
-                doTest(fileName);
-            }
         }
     }