Possible to remove default banner?

This may be a bit late for you, but I wanted to add my response for others that may be searching the internet for answers.

In your orignal form, go to File, then Properties.

Once there, select the Inital View Tab. After that, in the User Interface Options section, click "Hide window controls"

This will disable the "purple bar" completely. You will then need to re-save and re-open the file and voila.

Edited to Add: Oh yeah, this is NOT an April Fools Joke - lol

This doesn't work for LiveCycle PDFs, at least with Acrobat 9, all those properties are greyed out.

Here is the solution I came up with:

1. Build your form in LiveCycle.

2. Save a copy of the undistributed form.

3. Open the copy in Acrobat (don't open it in LiveCycle).

4. Select File, Save As Other, Reader Extended PDF, Enable More Tools.

5. Save the File. This version should allow reader edit/save rights, but will not contain the Submit Form button on the ribbon at the top.

This works for an interactive XML LiveCycle form.  You won't get a collect responses file if you do it this way, but that didn't matter for my purposes.