Remove nvim.desktop in favor of symlink

Moving to symlink fixes the following issues:
- App removes from launchers if you uninstall Nvim
- Nvim launches in the correct terminal without invalid desktop entry

Symlink setup moved to omarchy-nvim-setup (Ref:
https://github.com/omacom-io/omarchy-pkgs/commit/bb7a0f4c1f78d428bbe53bc3af2c91a9c8a5de3b)

applications/nvim.desktop

@@ -1,12 +0,0 @@
-[Desktop Entry]
-Name=Neovim
-GenericName=Text Editor
-Comment=Edit text files
-Exec=$TERMINAL -e nvim %F
-Terminal=false
-Type=Application
-Keywords=Text;editor;
-Icon=nvim
-Categories=Utility;TextEditor;
-StartupNotify=false
-MimeType=text/english;text/plain;text/x-makefile;text/x-c++hdr;text/x-c++src;text/x-chdr;text/x-csrc;text/x-java;text/x-moc;text/x-pascal;text/x-tcl;text/x-tex;application/x-shellscript;text/x-c;text/x-c++;

migrations/1759782459.sh

@@ -1,3 +0,0 @@
-echo "Fix opening in nvim from files manager"
-
-cp -f $OMARCHY_PATH/applications/nvim.desktop ~/.local/share/applications/nvim.desktop

migrations/1761583837.sh

@@ -1,3 +1,7 @@
 echo "Ensure nvim started from app launcher always starts nvim not $EDITOR"
 
-cp $OMARCHY_PATH/applications/nvim.desktop ~/.local/share/applications/
+if [ -f /usr/share/applications/nvim.desktop ]; then
+  rm ~/.local/share/applications/nvim.desktop
+  ln -s /usr/share/applications/nvim.desktop ~/.local/share/applications/nvim.desktop
+  update-desktop-database ~/.local/share/applications
+fi