/// This function will remove all left an right brackets.
/// Therefore the html tags will no longer be interpreted as html
/// ## Performance
/// This function is one of the fastest. But because it requires to copy the entire string it is
/// not adviced to be used on large strings.(Large string is above 100k characters.)
/// This function is O(n).
/// # Examples
/// ```
/// use xssan::fast::*;
/// assert_eq!("h1hello/h1", remove_brackets("<h1>hello</h1>"));
///
/// ```