Remove unnecessary begin/end in do/end block in _tmpdir.rb

Author: k0kubun

tool/lib/_tmpdir.rb

@@ -85,16 +85,14 @@ def list_tree(parent, indent = "", &block)
         warn colorize.notice("Children under ")+colorize.fail(tmpdir)+":"
         Dir.chdir(tmpdir) do
           ls.list_tree(".") do |path, st|
-            begin
-              if st.directory?
-                Dir.rmdir(path)
-              else
-                File.unlink(path)
-              end
-            rescue Errno::EACCES
-              # On Windows, a killed process may still hold file locks briefly.
-              # Ignore and let FileUtils.rm_rf handle it below.
+            if st.directory?
+              Dir.rmdir(path)
+            else
+              File.unlink(path)
             end
+          rescue Errno::EACCES
+            # On Windows, a killed process may still hold file locks briefly.
+            # Ignore and let FileUtils.rm_rf handle it below.
           end
         end
       end