Remove tests on -Xuse-ir compiler flag

This flag is going to be removed because old backend is not supported
anymore, therefore there's no need to test it.

compiler/testData/compileKotlinAgainstCustomBinaries/missingDependencyNestedAnnotationIr/library/a.kt

@@ -1,10 +0,0 @@
-package a
-
-import kotlin.reflect.KClass
-
-interface A {
-    @Target(AnnotationTarget.CLASS, AnnotationTarget.FUNCTION, AnnotationTarget.TYPE_PARAMETER)
-    annotation class Anno(val value: String)
-}
-
-annotation class K(val klass: KClass<*>)

compiler/testData/compileKotlinAgainstCustomBinaries/missingDependencyNestedAnnotationIr/library/b.kt

@@ -1,10 +0,0 @@
-package b
-
-import a.*
-
-@A.Anno("B")
-interface B {
-    @A.Anno("foo")
-    @K(A.Anno::class)
-    fun <@A.Anno("T") T> foo(t: T) = t
-}

compiler/testData/compileKotlinAgainstCustomBinaries/missingDependencyNestedAnnotationIr/source.kt

@@ -1,8 +0,0 @@
-package c
-
-import b.B
-
-// There should be _no_ error despite the fact that B and B#foo are annotated with an annotation which cannot be resolved
-fun bar(b: B) {
-    b.foo("")
-}

compiler/testData/compileKotlinAgainstCustomBinaries/missingEnumReferencedInAnnotationArgument/library/source.kt

@@ -1,7 +0,0 @@
-package test
-
-enum class E { ENTRY }
-
-annotation class Anno(val e: E)
-
-@Anno(E.ENTRY) open class Class

compiler/testData/compileKotlinAgainstCustomBinaries/missingEnumReferencedInAnnotationArgument/missingEnumReferencedInAnnotationArgument.kt

@@ -1,3 +0,0 @@
-package test
-
-class Subclass : Class()

compiler/testData/compileKotlinAgainstCustomBinaries/missingEnumReferencedInAnnotationArgument/missingEnumReferencedInAnnotationArgument.txt

@@ -1,14 +0,0 @@
-package test
-
-public final annotation class Anno : kotlin.Annotation {
-    public constructor Anno(/*0*/ e: test.E)
-    public final val e: test.E
-}
-
-@test.Anno(e = E.ENTRY) public open class Class {
-    public constructor Class()
-}
-
-public final class Subclass : test.Class {
-    public constructor Subclass()
-}

compiler/testData/compileKotlinAgainstCustomBinaries/missingEnumReferencedInAnnotationArgumentIr/output.txt

@@ -1 +0,0 @@
-OK