[DOCUMENTATION] Removing the version plan.

This is because:
- All our modules follow semantic versioning, so it should already be implicit.
- It mentions the *plan* to support `0.10`, but can easily be confused with already supporting `0.10`.
- This doesn't really add anything to the documentation.

README.md

@@ -30,16 +30,6 @@ composer require --dev symbiote/silverstripe-phpstan:2.0.0 phpstan/phpstan-shim:
 
 NOTE: We recommend installing the phpstan-shim as currently in SilverStripe 3.X, the QueuedJobs module's dependence on superclosure forces the PHP-Parser dependency of PHPStan to be at a very outdated version.
 
-## Version Plan
-
-The plan is that this module will follow semantic versioning, even though the PHPStan module does not at time of writing.
-The pattern will be as follows until I no longer need to maintain support for SilverStripe 3.
-
-- This Module: ~1.0 - SilverStripe 3.X - PHPStan: 0.9.X 
-- This Module: ~2.0 - SilverStripe 4.X - PHPStan: 0.9.X
-- This Module: ~3.0 - SilverStripe 3.X - PHPStan: 0.10.X 
-- This Module: ~4.0 - SilverStripe 4.X - PHPStan: 0.10.X
-
 ## Requirements
 
 * SilverStripe 3.1+