boolean[][] newFriendships = new boolean[names.length-1][names.length-1];
		for (int i = 0; i < names.length-1; i++){
			for (int j = 0; i < names.length-1; i++){
				if ((i < user) && (j < user)){
					newFriendships[i][j] = friendships[i][j];
				}
				else if((i >= user) && (j < user)){
					newFriendships[i][j] = friendships[i+1][j];
				}
				else if((i < user) && (j >= user)){
					newFriendships[i][j] = friendships[i][j+1];
				}
				else if ((i >= user) && (j >= user)){
					newFriendships[i][j] = friendships[i+1][j+1];
				}
			}
		}

this.friendships = newFriendships;

Output when trying to remove row + col 3 from the matrix:

BEFORE:
0 1 0 1 0 0
1 0 0 1 0 1
0 0 0 0 1 0
1 1 0 0 0 0
0 0 1 0 0 0
0 1 0 0 0 0

AFTER:
0 0 0 0 0
1 0 0 0 0
1 0 0 0 0
0 0 0 0 0
0 0 0 0 0