Apply suggestions from code review

Signed-off-by: Charles de Dreuille <charles.dedreuille@gmail.com>

.changeset/whole-papers-retire.md

@@ -2,4 +2,4 @@
 '@backstage/canon': minor
 ---
 
-Added a new TextField component to replace the Field and Input component. After feedback, it became clear that we needed to build a more opinionated version to avoid any problem in the future.
+**BREAKING**: Added a new TextField component to replace the Field and Input component. After feedback, it became clear that we needed to build a more opinionated version to avoid any problem in the future.

packages/canon/src/components/TextField/TextField.tsx

@@ -48,7 +48,6 @@ export const TextField = forwardRef<HTMLInputElement, TextFieldProps>(
           className={clsx(
             'canon-Input',
             `canon-Input--size-${responsiveSize}`,
-            className,
           )}
           {...rest}
         />