I need help figuring something out on my HTC EVO LTE running JB HELP!!

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http://forums.androidcentral.com – i know they finally gave us the ability to delete frequent calls on the call screen, but how about in the messages screen? when i start typing in a number when im composing a text, i get a list of frequent numbers that i"ve texted....and thats not good! these numbers are not saved to my phone book. on my evo 3D i was able to delete them buy deleting the call history, but its not working on this phone. someone please help!! (HowTos)