Remove LANGUAGE_VERSION from non-coroutine codegen tests

Most of these tests used this directive as a way to opt in to a new
language feature, and most of those features are already stable for a
long time, so no opt-in is needed. Some other tests used the directive
to opt out from a language feature, replace those by the `LANGUAGE`
directive. One test used the directive to test behavior that actually
depended on the API version; use `API_VERSION` directive there instead.

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

@@ -1,4 +1,4 @@
-// LANGUAGE_VERSION: 1.0
+// !LANGUAGE: -InlineConstVals
 // FILE: Foo.kt
 
 private const val OUTER_PRIVATE = 20
@@ -18,4 +18,4 @@ class Foo {
 
 // 1 INVOKESTATIC
 // 1 PUTSTATIC
-// 2 GETSTATIC
+// 2 GETSTATIC

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

@@ -1,4 +1,4 @@
-// LANGUAGE_VERSION: 1.0
+// !LANGUAGE: -InlineConstVals
 
 const val z = 0
 
@@ -6,4 +6,4 @@ fun a() {
     val x = z
 }
 
-// 1 GETSTATIC NoInlineKt.z : I
+// 1 GETSTATIC NoInlineKt.z : I

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

@@ -1,4 +1,4 @@
-// LANGUAGE_VERSION: 1.0
+// !LANGUAGE: -InlineConstVals
 
 const val z = 0
 
@@ -7,4 +7,4 @@ fun a() {
     }
 }
 
-// 1 GETSTATIC NoInlineInCmpKt.z : I
+// 1 GETSTATIC NoInlineInCmpKt.z : I