Revise pledge for clarity in Code of Conduct

Simplified the pledge statement in the Code of Conduct.

Author: kiku-jw

CODE_OF_CONDUCT.md

@@ -2,7 +2,7 @@
 
 ## Our Pledge
 
-We pledge to make participation in our project a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+We pledge to make participation in our project a harassment-free experience for everyone.
 
 ## Our Standards