Drop all tests that disable features for language version less than 3

compiler/testData/codegen/bytecodeText/constProperty/noInline.kt

@@ -1,12 +0,0 @@
-// !LANGUAGE: -InlineConstVals
-// IGNORE_BACKEND_FIR: JVM_IR
-
-// Fir2Ir IrConstTransformer inline everything it can unconditionally
-// No fix atm, we don't have to support this feature
-const val z = 0
-
-fun a() {
-    val x = z
-}
-
-// 1 GETSTATIC NoInlineKt.z : I

compiler/testData/codegen/bytecodeText/constProperty/noInlineInCmp.kt

@@ -1,12 +0,0 @@
-// !LANGUAGE: -InlineConstVals
-// IGNORE_BACKEND_FIR: JVM_IR
-// FIR status: don't support legacy feature
-
-const val z = 0
-
-fun a() {
-    if (z == 2) {
-    }
-}
-
-// 1 GETSTATIC NoInlineInCmpKt.z : I