Removed source blocks:
- imageExists: 72 source bytes
- folderOptionsHtml: 801 source bytes
- folderTableHtml: 63 source bytes
- playlistStart: 64 source bytes
- handleStatus: 2269 source bytes
- normalUrl: 56 source bytes
- countImages: 408 source bytes

Compile and compare the actual firmware size with U2.9.
