Delete LoopusModules.json

This a dead link and looks like it was replaced with Sonus Dept. Sonus Modular plugins

plugins/LoopusModules.json

@@ -1,8 +0,0 @@
-{
-  "slug": "LoopusModules",
-  "name": "Loopus Modules",
-  "author": "Sonus Dept.",
-  "version": "0.5.1",
-  "homepage": "https://loopusmodules.sonusdept.com",
-  "manual": "https://sonusdept.altervista.org/files/loopusmodules/LoopusModules_manual.pdf"
-}