make it impossible to emit any ANSI colors when color is set to off

Author: nevakrien

Cargo.toml

@@ -21,7 +21,6 @@ auto-color = ["concolor", "concolor/auto"]
 yansi = "1.0"
 unicode-width = "0.2.0"
 concolor = { version = "0.1", optional = true }
-strip-ansi-escapes = "0.2.1"
 
 [dev-dependencies]
 insta = "1.31.0"