It will delete all the pending posts

deletePendingPosts.js

var deleteSpam = {
    count: 0,
    list: null,
    timeout: 500,
    //Selector of cross(x) link
    crossSelector: '.userContentWrapper [aria-label="Delete"]',
    //Selector for buttons wrapper in overlay box which appears when we click on cross icon
    overlayPresenseSelector: '.uiOverlayFooter',
    //Delete button selector on overlay box
    confirmDeleteButtonSelector: 'button.layerConfirm',
    init: function() {
        this.list = document.querySelectorAll(this.crossSelector);
        this.overlay();
    },
    checkOverlay: function() {
        var that = this;
        var overlay = document.querySelector(this.overlayPresenseSelector);
        if (!overlay) {
            this.overlay();
        } else {
            setTimeout(function() {
                that.checkOverlay();
            }, this.timeout);
        }
    },
    overlay: function() {
        var that = this;
        var event = document.createEvent('HTMLEvents');
        event.initEvent('click', true, false);

        if (this.list.length <= this.count) {
            return false;
        }
        this.list[this.count].dispatchEvent(event);
        setTimeout(function() {
            that.confirm();
        }, this.timeout);
    },
    confirm: function() {
        var that = this;
        var button = document.querySelector(this.confirmDeleteButtonSelector);
        var event = document.createEvent('HTMLEvents');
        event.initEvent('click', true, false);

        if (button) {
            button.dispatchEvent(event);
            this.count++;
            setTimeout(function() {
                that.checkOverlay();
            }, this.timeout);
        } else {
            setTimeout(function() {
                that.confirm();
            }, this.timeout);
        }
    }
}.init();