Increase branch coverage of RSpec/Focus

The corrector logic for pair_type/str_type/sym_type seems like a
"generic" implementation, so I move things around to let that be a
"default" case in the if/else block.

.simplecov

@@ -2,7 +2,7 @@
 
 SimpleCov.start do
   enable_coverage :branch
-  minimum_coverage line: 100, branch: 98.44
+  minimum_coverage line: 100, branch: 98.57
   add_filter '/spec/'
   add_filter '/vendor/bundle/'
 end

lib/rubocop/cop/rspec/focus.rb

@@ -77,10 +77,10 @@ def on_send(node)
 
           focus_metadata(node) do |focus|
             add_offense(focus) do |corrector|
-              if focus.pair_type? || focus.str_type? || focus.sym_type?
-                corrector.remove(with_surrounding(focus))
-              elsif focus.send_type?
+              if focus.send_type?
                 correct_send(corrector, focus)
+              else
+                corrector.remove(with_surrounding(focus))
               end
             end
           end
@@ -89,9 +89,11 @@ def on_send(node)
         private
 
         def focus_metadata(node, &block)
-          yield(node) if focused_block?(node)
-
-          metadata(node, &block)
+          if focused_block?(node)
+            yield(node)
+          else
+            metadata(node, &block)
+          end
         end
 
         def with_surrounding(focus)