Disable mouse wheel speed

user.js

 user_pref("general.smoothScroll.msdPhysics.slowdownSpringConstant", 250);
 user_pref("general.smoothScroll.currentVelocityWeighting", 1.0);
 user_pref("general.smoothScroll.stopDecelerationWeighting", 1.0);
-user_pref("mousewheel.default.delta_multiplier_y", 250);
+//user_pref("mousewheel.default.delta_multiplier_y", 250);
 
 /* Bloat */
 user_pref("browser.newtabpage.activity-stream.default.sites", ""); // empty top sites list