Remove developer mode step from Ledger Live setup

Looks like the Solana Ledger app is past the Beta phase!
I was able to install the Solana app from Ledger Live without
having to enable developer mode.

There's also no mention of developer mode in Ledger's
Solana setup article:
https://support.ledger.com/hc/en-us/articles/360016265659-Solana-SOL-

docs/src/wallet-guide/ledger-live.md

@@ -30,11 +30,6 @@ on your Nano S device, users have several options of how to
 ## Install the Solana App on your Nano S
 
 - Open Ledger Live
-- Currently Ledger Live needs to be in "Developer Mode"
-  (Settings > Experimental Features > Developer Mode) to see our app.
-
-![Enabling Developer Mode](/img/ledger-live-enable-developer-mode.png)
-
 - Go to Manager in the app and find "Solana" in the App Catalog and
   click Install
   - Make sure your device is plugged in via USB and is unlocked with its PIN