Erase from the string.

constexpr basic_static_string&
erase(
    basic_static_string::size_type index = 0,
    basic_static_string::size_type count = basic_static_string::npos);
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constexpr basic_static_string::iterator
erase(
    basic_static_string::const_iterator pos);
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constexpr basic_static_string::iterator
erase(
    basic_static_string::const_iterator first,
    basic_static_string::const_iterator last);
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