You literally answered your own question. You cannot build a production version of a program with the DevExpress trial. Furthermore, their EULA forbids you from even using a trial to build/develop applications outside of simple evaluation purposes. Per their EULA:
You MAY NOT CREATE applications or begin software projects using the
SOFTWARE DEVELOPMENT PRODUCT(S) under the terms of the THIRTY (30) DAY
EVALUATION (TRIAL) USE LICENSE.
You MAY NOT REDISTRIBUTE files in the SOFTWARE DEVELOPMENT PRODUCT(S)
distribution if using an evaluation or trial version of the SOFTWARE
DEVELOPMENT PRODUCT(S).
How did you get a copy of a 10+ year old trial installer? DevExpress does not offer outdated trial versions. There is no configuration setting you can change to prevent this screen from popping up. You need to have a license.licx file compiled into the application with a valid license.
If you purchase a license you will have access to previous versions, so you can buy the latest version and install the licensed 9.3.3.0 copy to compile your program without the trial box. You will need to purchase a license for every developer that works on this application.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…