Remove style that overlap with Red Label

[aquillano]

i.e.

input:checked + .icon-checkbox,     // *2
    input.checked + .icon-checkbox {    // *3
        @include color_link;
        &:before {
            content: "\E0D3";
        }
        &:after {
            content: "Selected Checkbox";
        }
    }

... and similar.