Backwards compatible delete_method

[omus]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 96.15385% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 95.29%. Comparing base (48aaacf) to head (49d48cb).

Files with missing lines	Patch %	Lines
src/compat.jl	96.15%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #142      +/-   ##
==========================================
- Coverage   97.22%   95.29%   -1.93%     
==========================================
  Files           6        7       +1     
  Lines         144      170      +26     
==========================================
+ Hits          140      162      +22     
- Misses          4        8       +4     

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[omus]

Dropping Julia 1.0.0 due to:

Expression: Mocking.delete_method(m) === nothing
  type Method has no field primary_world

[omus]

UndefVarError: invoke_in_world not defined

This was only added in Julia 1.6.

[omus]

I'll split out the codecov and julia-version change into separate PRs tomorrow. The changes to Base.get_methodtable on Julia 1.12 seem a bit strange to me but it's an internal function and it only really impacts tests. I may dig into it further though.