Marcpe urgentapps update (#341)

* update two urgent apps

* update the icons

* remove the empty version_from strings

* remove the version from

Author: marcpems

src/content/applications/PixartMDM.md

@@ -3,6 +3,5 @@ name: "Pixart MDM"
 categories: ['endpoint-sec']
 compatibility: native
 display_result: "Compatible"
-version_from: 
 link: https://pixartargentina.com.ar/rxart-secure.html
 ---

src/content/applications/PixartRxArtSecure.md

@@ -3,6 +3,5 @@ name: "Pixart RxArt Secure"
 categories: ['endpoint-sec']
 compatibility: native
 display_result: "Compatible"
-version_from: 
 link: https://pixartargentina.com.ar/rxart-secure.html
 ---