Remove RFC rendered link step

Author: ehuss

src/lang/rfc-merge-procedure.md

@@ -64,12 +64,5 @@ To track further discussion, subscribe to the tracking issue here:
 rust-lang/rust#41517
 ```
 
-### Step 4: Update the rendered link
-
-Update the rendered link in the first post of the PR to the permanent home under
-`https://github.com/rust-lang/rfcs/blob/master/text/`.
-
-(This way future visitors can open it easily after the PR branch is deleted.)
-
 ### That's it, you're done!