home: vim: ftdetect: remove glsl

GLSL is now correctly detected starting with v0.11.

This reverts commit b8b64bed8e.

modules/home/vim/ftdetect/glsl.lua

@@ -1,7 +0,0 @@
--- Use GLSL filetype for common shader file extensions
-vim.filetype.add({
-    extension = {
-        frag = "glsl",
-        vert = "glsl",
-    },
-})