FIR: Update test-data (Delegate inference)

compiler/testData/codegen/box/inference/builderInference/kt47052.kt

@@ -1,6 +1,4 @@
 // WITH_STDLIB
-// IGNORE_BACKEND_FIR: JVM_IR
-// FIR status: in progress (delegate branch)
 
 public inline fun <R, C : MutableCollection<in R>> flatMapTo1(destination: C, transform: (List<String>) -> Iterable<R>) {}
 

compiler/testData/codegen/box/inference/builderInference/kt49285.kt

@@ -1,6 +1,4 @@
 // DONT_TARGET_EXACT_BACKEND: WASM
-// IGNORE_BACKEND_FIR: JVM_IR
-// FIR status: in progress (delegate branch)
 // WITH_STDLIB
 
 import kotlin.experimental.ExperimentalTypeInference