internal/core/adt: remove unnecessary code

This cleans things up a bit before the next CL.

Issue #2884

Signed-off-by: Marcel van Lohuizen <mpvl@gmail.com>
Change-Id: Ied21592878756982609db6b23abee35f5fbb0ae1
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1193021
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>

internal/core/adt/disjunct2.go

@@ -409,8 +409,6 @@ func (n *nodeContext) doDisjunct(c Conjunct, m defaultMode, mode runMode) (*node
 	// not all holes filled out yet is not finalized. This may require
 	// a special mode, or evaluating more aggressively if finalize is not given.
 	v.status = unprocessed
-	v.state.scheduler.completed &^= subFieldsProcessed
-	v.state.scheduler.frozen &^= subFieldsProcessed
 
 	d.overlays = n
 	d.disjunctCCs = append(d.disjunctCCs, holes...)

internal/core/adt/overlay.go

@@ -90,10 +90,6 @@ func (ctx *overlayContext) cloneRoot(root *nodeContext) *nodeContext {
 		ctx.initCloneCC(cc)
 	}
 
-	// Note that this may trigger tasks to run, so it should be called after
-	// everything is initialized.
-	v.state.signal(allAncestorsProcessed)
-
 	// TODO: walk overlay vertices and decrement counters of non-disjunction
 	// running tasks?
 	// TODO: find a faster way to do this. Walking over vertices would