Add this code to the Custom CSS field on the Appearance tab of your Pricing Table widget’s settings:
.eapps-pricing-table-column-2 .eapps-pricing-table-column-features-item:before {
background-color: transparent !important;
}
.eapps-pricing-table-column-2 .eapps-pricing-table-column-features-item:after {
background-color: transparent !important;
}