[tests] Change builder inference tests in accordance with new K2 BI diagnostics

Related to KT-59369, KT-59390

compiler/testData/diagnostics/tests/builderInference/issues/kt60291a.fir.kt

@@ -1,29 +0,0 @@
-// ISSUE: KT-60291
-// CHECK_TYPE_WITH_EXACT
-// WITH_STDLIB
-
-fun test() {
-    val buildee = selectBuildee(
-        build { setTypeVariable(TargetType()) },
-        build {}
-    )
-    // exact type equality check — turns unexpected compile-time behavior into red code
-    // considered to be non-user-reproducible code for the purposes of these tests
-    checkExactType<Buildee<TargetType>>(buildee)
-}
-
-
-
-
-fun <T> selectBuildee(vararg values: Buildee<T>): Buildee<T> = values.first()
-
-class TargetType
-
-class Buildee<TV> {
-    fun setTypeVariable(value: TV) { storage = value }
-    private var storage: TV = null!!
-}
-
-fun <PTV> build(instructions: Buildee<PTV>.() -> Unit): Buildee<PTV> {
-    return Buildee<PTV>().apply(instructions)
-}