compiler testdata: s/trait/interface

compiler/testData/diagnostics/tests/override/parameterNames/changeOnOverrideDiagnostic.kt

@@ -1,8 +1,8 @@
-trait A {
+interface A {
     fun b(a : Int)
 }
 
-trait B : A {}
+interface B : A {}
 
 class C1 : A {
     override fun b(<!PARAMETER_NAME_CHANGED_ON_OVERRIDE!>b<!> : Int) {}

compiler/testData/diagnostics/tests/override/parameterNames/differentNamesInSupertypesDiagnostic.kt

@@ -1,14 +1,14 @@
-trait C {
+interface C {
     fun foo(a : Int)
 }
 
-trait D {
+interface D {
     fun foo(b : Int)
 }
 
-<!DIFFERENT_NAMES_FOR_THE_SAME_PARAMETER_IN_SUPERTYPES!>trait E<!> : C, D
+<!DIFFERENT_NAMES_FOR_THE_SAME_PARAMETER_IN_SUPERTYPES!>interface E<!> : C, D
 
-trait F : C, D {
+interface F : C, D {
     override fun foo(<!PARAMETER_NAME_CHANGED_ON_OVERRIDE!>a<!> : Int) {
         throw UnsupportedOperationException()
     }

compiler/testData/diagnostics/tests/override/parameterNames/kjkHierarchy.kt

@@ -1,6 +1,6 @@
 // FILE: Super.kt
 
-trait Super {
+interface Super {
     fun foo(superName: Int)
 }
 

compiler/testData/diagnostics/tests/override/parameterNames/kjkWithSeveralSupers.kt

@@ -1,6 +1,6 @@
 // FILE: KSuper.kt
 
-trait KSuper {
+interface KSuper {
     fun foo(ksuperName: Int)
 }
 

compiler/testData/diagnostics/tests/override/parameterNames/kotlinInheritsBothJavaAndKotlin.kt

@@ -6,7 +6,7 @@ interface JavaInterface {
 
 // FILE: kotlin.kt
 
-trait KotlinTrait {
+interface KotlinTrait {
     public fun foo(someOtherName: Int) {}
 }
 

compiler/testData/diagnostics/tests/override/parameterNames/kotlinInheritsJava.kt

@@ -11,7 +11,7 @@ class SimpleSubclass : JavaInterface {
 }
 
 
-trait SubtraitWithFakeOverride : JavaInterface
+interface SubtraitWithFakeOverride : JavaInterface
 
 class Subclass : SubtraitWithFakeOverride {
     override fun foo(otherKotlinName: Int) {}