C :

#include <stdio.h>
int main()
{
	char str[100];
	char c;
	int k=0;
	while((str[k]=getchar())!='\n')
		k++;
	str[k]='\0';
	c=getchar();
	for(int i=0;str[i]!='\0';i++)
		if(str[i]!=c)
		printf("%c",str[i]);
	return 0;
}

C++ :

#include<bits/stdc++.h>
using namespace std;
int main(){
    char a[100],b[100],c;
    int i;
    gets(a);
    cin>>c;
    for(i=0;a[i]!='\0';i++){
    	if(a[i]==c){
    		continue;
		}
		cout<<a[i];
	}

	return 0;
}

Java :

import java.util.Scanner;
public class Main{
	public static void main(String[] args) {
		Scanner scanner=new Scanner(System.in);
		String str=scanner.nextLine();
		String c=scanner.nextLine();
		System.out.println(str.replace(c, ""));
	}
}

Python :

a=input()
b=input()
c=a.replace(b,"")
print(c)