Remove branch coverage workaround, no longer needed in Ruby 3

spec/spec_helper.rb

@@ -23,53 +23,9 @@
   def SimpleCov.rodauth_coverage(opts = {})
     start do
       enable_coverage :branch
-
-      # Work around Ruby Bug #16967
-      Coverage.singleton_class.prepend(Module.new do
-        def result
-          res = super
-          check_branch = true
-          skip_2nd = lambda do |ary|
-            ary = ary.dup
-            ary.slice!(1)
-            ary
-          end
-          res.values.each do |hash|
-            if check_branch
-              unless hash.is_a?(Hash) && hash[:branches]
-                return res
-              end
-              check_branch = false
-            end
-            unique_branches = {}
-            branch_counters = {}
-            new_branches = {}
-            branches = hash[:branches]
-            branches.each do |k, v|
-              new_k = skip_2nd[k]
-              if branch_values = unique_branches[new_k]
-                v.each do |k1, v1|
-                  branch_counters[skip_2nd[k1]] += v1
-                end
-                branch_values.keys.each do |k1|
-                  branch_values[k1] = branch_counters[skip_2nd[k1]]
-                end
-              else
-                unique_branches[new_k] = new_branches[k] = v
-                v.each do |k1, v1|
-                  branch_counters[skip_2nd[k1]] = v1
-                end
-              end
-            end
-            hash[:branches] = new_branches
-          end
-          res
-        end
-      end)
       add_filter "/spec/"
       add_group('Missing'){|src| src.covered_percent < 100}
       add_group('Covered'){|src| src.covered_percent == 100}
-      yield self if block_given?
     end
   end