Since you're not dialing 9 for outside access, remove the 11; entry
No one is going to dial just 11 and expect to reach 911
But keep the 911;/Dial Emergency/911 entry, so when they dial 911 they get 911
Keep the 911X (or 911N) entry, so if they dial a telephone number starting with 91 and they fat-finger the 1 and end up dialing it twice, the call is blocked.
Personally, I don't start extension or hunt group extensions with 1, keep 9N dialing, but also do 1N/Dial/1N/50:Main to allow dialing 1+ArecCode+TelephoneNumber for domestic (US) calls