Bug 1500046 - disabled browser_animation_logic_mutations_fast.js on all platforms. r=jmaher

devtools/client/inspector/animation/test/browser.ini

@@ -69,6 +69,7 @@ skip-if = (os == "win" && ccov) # Bug 1490981
 [browser_animation_logic_created-time.js]
 [browser_animation_logic_mutations.js]
 [browser_animation_logic_mutations_fast.js]
+skip-if= true # Bug 1500046
 [browser_animation_logic_mutations_properties.js]
 [browser_animation_logic_overflowed_delay_end-delay.js]
 skip-if = debug #bug 1480027