Touchsight functions by sense of (telekinetic) touch, which is the one sense that Hide from the World does not cover. Additionally, it's not one of the (many) things that Hide From The World specifically makes you immune to detection by.
RAW, This one's pretty straightforward.
While touchsight isn't one of the things that Hide From The World is specifically defined to protect against, that's not actually useful data. The Trickster Creature came out in the Book of Monster Templates (Rite Publishing, Aug 2010 or so). Touchsight comes from Psionics Unleashed (Dreamscarred Press, Dec 2010 or so). Powers and spells usually do not include lists of monster feature interactions (like specifying that touchsight specifically not work against Hide From the World). Even if the two third-party publishers were paying attention to one another, there's nowhere in particular that the interaction would be stated. Pure RAW is not particularly helpful here.
What we do have is comparative level of power. Touchsight is a 3rd-level power, available to 5th-level psions. That makes it equivalent in power to things like Invisibility Purge, rather than things like True Seeing. Hide From The World protects against effects at the tier of Invisibility Purge, and even True Seeing requires a caster check when trying to overcome it. If Touchsight does work against Hide From The world, then that's effectively a specific vulnerability that the creature type has against people who happen to have taken that that specific ability (and one of the three classes that can qualify for it).
And at your table?
The point of Trickster Creature is to be an annoying creature who messes with the players, who they cannot find (until his rounds-per-day runs out, or they manage to stumble into him), in spite of having generally effective anti-invisibility powers on hand. Even for high-level characters, deploying abilities that generally no-sell all forms of illusion and concealment, the Trickster Creature has a chance of evading detection. If that is not the experience you want to visit on your players, then that's not a template you should be using. If it is an experience you want to visit on your players (and you have a psion in the party) then letting your party psion simply ignore one of the defining traits of the creature will eliminate a big part of the point of using the template in the first place.