NI: Get rid of confusing asConstraintSystemCompletionContext

NB: there is a different asConstraintSystemCompleterContext that might have side effects

compiler/resolution.common/src/org/jetbrains/kotlin/resolve/calls/inference/components/ConstraintSystemCompletionContext.kt

@@ -32,7 +32,5 @@ interface ConstraintSystemCompletionContext : VariableFixationFinder.Context, Re
 
     fun fixVariable(variable: TypeVariableMarker, resultType: KotlinTypeMarker, position: FixVariableConstraintPosition<*>)
 
-    fun asConstraintSystemCompletionContext(): ConstraintSystemCompletionContext
-
     fun couldBeResolvedWithUnrestrictedBuilderInference(): Boolean
 }

compiler/resolution.common/src/org/jetbrains/kotlin/resolve/calls/inference/model/NewConstraintSystemImpl.kt

@@ -104,8 +104,6 @@ class NewConstraintSystemImpl(
 
     override fun asPostponedArgumentsAnalyzerContext() = apply { checkState(State.BUILDING) }
 
-    override fun asConstraintSystemCompletionContext(): ConstraintSystemCompletionContext = apply { checkState(State.BUILDING) }
-
     // ConstraintSystemOperation
     override fun registerVariable(variable: TypeVariableMarker) {
         checkState(State.BUILDING, State.COMPLETION, State.TRANSACTION)