Drop l and L tags

They have clashing meanings. And there's no need to have gps coordinates at different resolutions. That's what geohash is good for.

This commits drop the GPS coordinate entirely, the next commit brings it back in a different way.

main.ts

@@ -139,8 +139,8 @@ for (const i in posts) {
 
         if (geotags == undefined && media.media_metadata && media.media_metadata.photo_metadata) {
             const options = {
-                geohash: true,
-                gps: true,
+                geohash: true, // l tag per NIP-52, adds multiple tags at decreasing resolution
+                gps: false,    // Avoid multiple tags, insert them manually below.
                 city: false,
                 iso31662: false,
                 iso31663: false