iPhone stuck at Apple bootup after attempted evasi0n deletion
Put your device into DFU mode following these instructions:


Connect the iPhone to your computer and open iTunes
Hold the power and home buttons for ten seconds
Release the power button but keep on holding the power button
iTunes should pop up saying that it detected an iPhone in Recovery Mode. At this point, the screen should be black. If you see anything, start over
Restore the iPhone


You should never delete jailbreak files. They are essential to your device. The only official way to remove your jailbreak is to backup files and then restore.