I thought of a possible alternate method to eliminate numbers, but it won't work so far.
My desired application is to use TextAssist v.4.0 (i.e. TA) for text-to-speech playback on text that has every line consecutively numbered.
TA allows the use of specialized 'speech dictionaries' (suffix '.tad') in which you can set it up to substitute words in speech.
For instance, a hypothetical 'block.tad' speech dictionary may be selected, and the word 'cube' in print, can be set up to be spoken as 'block'.
Thus; "I found a cube," in print, would be spoken, "I found a block."
So I tried creating a 'no numbers.tad' speech dictionary, and entered numbers 0 through 9, with no spoken equivalent, the idea being to induce TA to say nothing when encountering numbers.

But some entries seem to be hard-wired, and the attempt failed.
I've tried to find where these hard-wired entries are located in a TA program file, without success.
If I could open and edit the hard-wired entry list, perhaps a separate copy of TA might be set up, with a backup original copy preserved.

So it was a thought, but I have no idea how it might be done.

I could sure use a simple program snack or 'macro' that allows me to delete numbers 0 thru 9, and the quote marks, in a .txt file, with just a few clicks.  :-*