removePropagation() {
        if (this.inp1.value === undefined) {
            let i = 0;
            for (i = 0; i < this.outputs.length; i++) { // False Hit
                if (this.outputs[i].value === undefined) return;
            }
            for (i = 0; i < this.outputs.length; i++) {
                if (this.outputs[i].value !== undefined) {
                    this.outputs[i].value = undefined;
                    simulationArea.simulationQueue.add(this.outputs[i]);
                }
            }
        } else if (this.inp1.value !== undefined) {
            this.inp1.value = undefined;
            simulationArea.simulationQueue.add(this.inp1);
        }
        this.prevInpValue = undefined;
    }
@memberof Splitter
fn to remove proporgation delay.
@return {JSON}