Remove A Letter

Write remove_char(s: str, ch: str) -> str that returns the text s with every copy of the single character ch removed, by recursion and without .replace(): the empty string stays empty; when the first character equals ch, return the cleaned rest of the text (the slice s[1:]) with nothing added; otherwise return the first character followed by the cleaned rest. Do NOT write a main block or any top-level test code; the tests construct the calls. Input: two lines, the text (it may be empty) and then the character, which the tests read and pass to your function before printing the string it returns (an empty result prints as a blank line).