Remove Scourge Invaders v1.1.0

In this version, I figured out how to view compiler-generated code that dnSpy hides by default. From there, with great trial and error, I was able to rework the code to only modify the explicit lines that spawn the Scourge invaders.

(The previous version caused Madman difficulty to not work properly)

Changelog:

• Remove previous patch that affected the whole Invader method
• Add patch that does the following:
  • Remove the "The Scourge have invaded!" message
  • Disable boss music when Scourge invaders would spawn
  • Prevent Scourge invader spawns (this time by removing the specific line that would spawn them, rather than the whole method)