misc: image changes

- add safemode_highlighted to guide
- remove crypto images (unused)

_pages/en_US/installing-boot9strap-(usm).txt

@@ -76,7 +76,7 @@ If your (Right/Left Shoulder), (D-Pad Up), or (A) buttons do not work, you will
 1. The update will eventually fail, with the error code `003-1099`. This is intended behaviour
 1. When asked "Would you like to configure Internet settings?", select "Yes"
 1. On the following menu, navigate to `Connection 1` -> `Change Settings` -> `Next Page (right arrow)` -> `Proxy Settings` -> `Detailed Setup`
-  + This is a [visual representation](https://uwuu.ca/images/safemode_highlighted.png)
+  + This is a [visual representation](/images/safemode_highlighted.png)
 1. If the exploit was successful, your device will have booted into SafeB9SInstaller
 
 #### Section IV - Installing boot9strap