Remove Character from String Problem Statement

Given a string str and a character 'X', develop a function to eliminate all instances of 'X' from str and return the resulting string.

Input:

The first line contains a string without leading or trailing spaces.
The second line contains a character 'X' without leading or trailing spaces.

Output:

The output is a single line displaying the modified string.

Example:

Input:

hello world
o

Output:

hell wrld

Constraints:

• 0 <= N <= 10^6, where N is the length of str.
• Process should complete within 1 second.

Note:

No need to explicitly print anything; assume that all necessary output operations have been handled.