The name is displayed in the case of someone controlling multiple characters -- say, for example, the GM, or a character with a pet/familiar who also has abilities. If you don't want the name to show, you've got two options: Mark the Ability as a token action, and you'll see the Abilities at the top (rather than the bottom) whenever the character's token is selected; or make Macros instead of Abilities (macros are tied to the player rather than the character, and don't show a name before the macro name). If you ever type an action into the chat, note that Macros are called with #MacroName as opposed to Abilities which are called with %{Character|AbilityName} (Macros can also be token actions; however, since they're not tied to a character, they'll show up when selecting any token, instead of only for a specific token.)