[FIR] Get rid of TransformImplicitType transformer

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/TransformUtils.kt

@@ -28,19 +28,6 @@ internal object StoreType : FirDefaultTransformer<FirTypeRef>() {
     }
 }
 
-internal object TransformImplicitType : FirDefaultTransformer<FirTypeRef>() {
-    override fun <E : FirElement> transformElement(element: E, data: FirTypeRef): E {
-        return element
-    }
-
-    override fun transformImplicitTypeRef(
-        implicitTypeRef: FirImplicitTypeRef,
-        data: FirTypeRef
-    ): FirTypeRef {
-        return data
-    }
-}
-
 internal fun FirValueParameter.transformVarargTypeToArrayType() {
     if (isVararg) {
         this.transformTypeToArrayType()

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/FirImplicitBodyResolve.kt

@@ -19,7 +19,6 @@ import org.jetbrains.kotlin.fir.resolve.providers.firProvider
 import org.jetbrains.kotlin.fir.resolve.transformers.AdapterForResolveProcessor
 import org.jetbrains.kotlin.fir.resolve.transformers.FirTransformerBasedResolveProcessor
 import org.jetbrains.kotlin.fir.resolve.transformers.ReturnTypeCalculator
-import org.jetbrains.kotlin.fir.resolve.transformers.TransformImplicitType
 import org.jetbrains.kotlin.fir.resolve.transformers.contracts.runContractResolveForLocalClass
 import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.fakeOverrideSubstitution
@@ -219,9 +218,7 @@ private class ReturnTypeCalculatorWithJump(
 
     override fun tryCalculateReturnTypeOrNull(declaration: FirCallableDeclaration): FirResolvedTypeRef {
         if (declaration is FirValueParameter && declaration.returnTypeRef is FirImplicitTypeRef) {
-            // TODO?
-            declaration.transformReturnTypeRef(
-                TransformImplicitType,
+            declaration.replaceReturnTypeRef(
                 buildErrorTypeRef {
                     diagnostic = ConeSimpleDiagnostic("Unsupported: implicit VP type")
                 }