从SyntaxHighlighter中删除行号

.syntaxhighlighter .gutter .line {
    background-color: #f5f5f5;
    color: #aaa;
    border-right: 1px solid #ddd;
    padding: 5px;
    text-align: right;
}

.syntaxhighlighter .gutter .line {
    background-color: #f5f5f5;
    color: #aaa;
    border-right: none;
    padding: 5px;
    text-align: right;
}