Add new RSpec/RemoveConst cop #1727

Job	Run time
Confirm config and documentation	13s
Test coverage	23s
Edge RuboCop: internal_investigation	21s
Ruby 2.7: internal_investigation	32s
Edge RuboCop: spec	25s
Ruby 2.7: spec	40s
RSpec 4	21s
Ruby 3.0: internal_investigation	18s
Ruby 3.0: spec	25s
Ruby 3.1: internal_investigation	18s
Ruby 3.1: spec	25s
Ruby 3.2: internal_investigation	17s
Ruby 3.2: spec	24s
Ruby ruby-head: internal_investigation	18s
Ruby ruby-head: spec	23s
Ruby jruby-9.4: internal_investigation	1m 30s
Ruby jruby-9.4: spec	1m 29s
	8m 42s

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