Unfortunately, it isn't possible to remove reverb from an audio recording. The best you can do is to try to minimize it using the parametric equalizer and maybe some gating. Play around with attenuating different frequencies to see if you can improve the recording. Gating might also help remove a little bit, especially if the delay is long, but you're pretty much stuck with some reverb. Reverb and echo are recording issues, that need to be addressed with good micing technique.
