Write a method that accepts a string 'str' and a character 'removeLtr'. Return the string 'str' but with all instances of 'removeLtr' removed from 'str'. You method needs to be case-sensitive, so if 'removeLtr' is a 'g' only lower-case g's get removed (for example). The only string methods allowed are: .length, .charAt, .substring, .equals, and .compareTo. Look at the test data for examples.