While I am using sweeper keeper(support) for my tactic, I couldn't able to absorb which attributes are worthless for goalkeeper...
Do a goalkeeper need these skills:
Team Work
Work Rate
Strength
Balance
You can see in the descriptions what the attributes are for.
WORK RATE - This attribute reflects the player's willingness to work to his full capacity, going above and beyond the call of duty
TEAMWORK - This attribute reflects how the player can follow tactical instructions whilst working for and alongside his teammates
So you'll want decent teamwork and you can have a bit lower work rate for a GK that wont impact too much overall.
Strength and balance, I'm assuming these still affect how well the GK can stay on his feet and his ability to use his strength to push defenders around.