Updated Hit Restrictions

Customer's can no longer be stupid and place hits on themselves.
Customer's, by default, can no longer use hitman to place hits on other
hitmen (some odd hitception)
Revert "Updated Hit Restrictions"

This reverts commit b26295bb896e298ececfffcfcc0fc1bb117377de.
Updated Hit Restrictions

Customer's can place hits on themselves.
Hits, by default, cannot be placed on other hitman