make conky and browsh uninstall successfully to fix error log

apps/Browsh/uninstall

@@ -7,8 +7,11 @@ function error {
   exit 1
 }
 
-sudo apt purge -y browsh || error 'Failed to remove browsh!'
-sudo rm ~/.local/share/applications/browsh.desktop
+if command -v browsh >/dev/null ;then
+  sudo apt purge -y browsh || error 'Failed to remove browsh!'
+fi
+
+sudo rm -f ~/.local/share/applications/browsh.desktop
 
 #if your app installs any packages, keep this command here so those packages will be removed.
 "${DIRECTORY}/purge-installed" "$(dirname "$0")" || exit 1

apps/Conky/uninstall

@@ -12,3 +12,5 @@ function error {
 rm -f ~/.config/autostart/conky.desktop ~/.conkyrc || error "Failed to remove autostart file or .conkyrc!"
 
 killall conky 2>/dev/null
+
+exit 0