So, the question is...Can i merge the magic and special skill in battle window to become one?
And how do i disable the magic or special skill in the battle window?
And how do i disable the TP function or MP function in the battle? Did it use a script or just an event?
Well, i'm sorry if I asking too much...But, i still confused about the TP thing(Well, it's new for me)...

TP is basically another set of MP, except it is gained differently. To remove magic or special skill from the battle window, remove the trait giving this skill type (in the Class tab).
And to forbid TP to be displayed, you'll need a script I'm afraid. Specifically, this one.

Because I apparently have less of a life than Kread-EX (somehow ), I'll explain it in a little more depth.
Skills can now cost both MP and TP. Or just MP or TP. Or still neither. Actors gain TP over time. By default, they have a gauge that goes to a maximum of 100 for TP, and that is raised by a random amount at the beginning of each turn. Yanfly wrote a script that alters stuff like this, but that's just because Yanfly's awesome. There is a box in the actor's tab that enables or disables their TP display. You can also use scripts, like my script Kread-EX linked, to do more advanced things with the display.

What?!? Come again?

VX Ace has a display TP checkbox in the systems tab. Just uncheck it. VX Ace also has several other functions, like party exp sharing.