[IR] Unconditionally allow to interpret IrConst

We can interpret all const elements. It wasn't true on early
prototype phase because of some problems with unsigned numbers,
but right now it is correct to assume that all const are valid.

#KT-58923

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/checker/IrInterpreterCommonChecker.kt

@@ -114,10 +114,6 @@ class IrInterpreterCommonChecker : IrInterpreterChecker {
     }
 
     override fun visitConst(expression: IrConst<*>, data: IrInterpreterCheckerData): Boolean {
-        if (expression.type.getUnsignedType() != null) {
-            val constructor = expression.type.classOrNull?.owner?.constructors?.singleOrNull() ?: return false
-            return data.mode.canEvaluateFunction(constructor)
-        }
         return true
     }