windows: delete lightning URI hooks on uninstall

On install we register the URIs for bitcoin, lightning, lnurlp and lnurlw
in the registry but on uninstall we would only remove bitcoin again.

Author: f321x

contrib/build-wine/electrum.nsi

@@ -237,6 +237,9 @@ Section "Uninstall"
   RMDir  "$SMPROGRAMS\${PRODUCT_NAME}"
 
   DeleteRegKey HKCU "Software\Classes\bitcoin"
+  DeleteRegKey HKCU "Software\Classes\lightning"
+  DeleteRegKey HKCU "Software\Classes\lnurlp"
+  DeleteRegKey HKCU "Software\Classes\lnurlw"
   DeleteRegKey HKCU "Software\${PRODUCT_NAME}"
   DeleteRegKey HKCU "${PRODUCT_UNINST_KEY}"
 SectionEnd