Remove OS 9 without a clean install of OS X?

I have both OS 9 and OS 10.3 on my computer.
I want to remove OS 9 but don't want to have to reinstall all my applications. Can I trash the OS 9 applications and system folder or will it mess up my computer?
I don't use anything on OS 9 anymore.
Thanks!
G4 Mac OS X (10.3.9)

At the root directory of the hard drive there would be typically three folders associated with OS 9:
System Folder
Applications (Mac OS 9)
Documents
Drag them to the Trash to remove OS 9. Open the Classic preferences and be sure you have Classic shut down. Restart the computer. After restart you should be able to Empty the Trash.
CAUTION:
There is a folder named System and a folder named System Folder. The latter is the OS 9 folder; the former is for OS X. DO NOT delete System.

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