[TD] Remove some outdated dumps in FIR_IDENTICAL tests

compiler/testData/ir/irText/expressions/floatingPointComparisons/nullableAnyAsIntToDouble.fir.kt.txt

@@ -1,6 +0,0 @@
-fun test(x: Any?, y: Double): Boolean {
-  return when {
-    x is Int -> less(arg0 = x /*as Int */.toDouble(), arg1 = y)
-    else -> false
-  }
-}

compiler/testData/ir/irText/expressions/kt36963.fir.kt.txt

@@ -1,6 +0,0 @@
-fun foo() {
-}
-
-fun test(): KFunction0<Unit> {
-  return CHECK_NOT_NULL<KFunction0<Unit>>(arg0 = ::foo)
-}