Removes a character from a string.


int uremove(char *s, int index);
Removes the character at the specified `index' within the string, sliding the rest of the data back to fill the gap. If `index' is negative, it counts backward from the end of the string. Example:
      int length_in_bytes = ustrsizez(text_string);
      length_in_bytes -= uremove(text_string, -1);
Returns the number of bytes by which the trailing part of the string was moved.

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