/* Target exactly what you're seeing in the inspector */
.menu-vertical .menu-sub .menu-item .menu-link::before {
    content: none !important;
    display: none !important;
    width: 0 !important;
    height: 0 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    position: static !important;
    border: none !important;
}

/* Fix the padding to compensate for removed bullets */
.menu-vertical .menu-sub .menu-item .menu-link {
    padding-left: 18px !important; /* Adjust from 38px */
}

/* For good measure, target variations of the selector */
a.menu-link::before {
    content: none !important;
    display: none !important;
}

.sidebar-area .menu-sub li::before,
.sidebar-area .menu-sub li::after {
    display: none !important;
    content: none !important;
}

/* Override any !important rules from the original stylesheet */
body .sidebar-area .menu-vertical .menu-sub .menu-item .menu-link::before {
    display: none !important;
    content: none !important;
}