[build] no need to clean on rake test_pure (similar to test_ext)

1 files changed, 1 insertions, 1 deletions

diff --git a/Rakefile b/Rakefile
index c6c195f..532aacb 100644
--- a/Rakefile
+++ b/Rakefile
@@ -176,7 +176,7 @@ task :check_env do
 end
 
 desc "Testing library (pure ruby)"
-task :test_pure => [ :clean, :check_env, :do_test_pure ]
+task :test_pure => [ :check_env, :do_test_pure ]
 
 UndocumentedTestTask.new do |t|
   t.name = 'do_test_pure'