Correct comment stating lockup gates stake authorize ixs

[jstarry]

Problem

Lockup doesn't prevent re-authorization but some comments say they do

Summary of Changes

• Update comments
• Delete dead code

Fixes #

[codecov]

Codecov Report

Merging #10063 into master will decrease coverage by 0.1%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #10063     +/-   ##
=========================================
- Coverage    81.5%    81.4%   -0.2%     
=========================================
  Files         283      283             
  Lines       65782    65757     -25     
=========================================
- Hits        53660    53572     -88     
- Misses      12122    12185     +63     

[garious]

Near heart attack seeing that dead code. I checked the withdraw implementation and happy to see all the right safeguards and tests were in place and that code was indeed redundant.

[jstarry]

Near heart attack seeing that dead code

Same 😨