readme: remove unneeded detail re geocode feature

[skip ci]

README.md

@@ -331,7 +331,7 @@ For details, see [Environment Variables](docs/ENVIRONMENT_VARIABLES.md) and the
 * `apply` - enable `apply` command. This swiss-army knife of CSV transformations is very powerful, but it has a lot of dependencies that increases both compile time and binary size.
 * `fetch` - enables the `fetch` & `fetchpost` commands.
 * `foreach` - enable `foreach` command (not valid for Windows).
-* `geocode` - enable `geocode` command. This command uses an updateable copy of the Geonames Cities database which is ~2.5MB in size.
+* `geocode` - enable `geocode` command.
 * `generate` - enable `generate` command.
 * `luau` - enable `luau` command. Embeds a [Luau](https://luau-lang.org) interpreter into qsv. [Luau has type-checking, sandboxing, additional language operators, increased performance & other improvements](https://luau-lang.org/2022/11/04/luau-origins-and-evolution.html) over Lua.
 * `polars` - enables all [Polars](https://pola.rs)-powered commands (currently, `joinp` and `sqlp`). Note that Polars is a very powerful library, but it has a lot of dependencies that drastically increases both compile time and binary size.