Revert "read-only checkbx/mrk faded and act more read-only"

This reverts commit 3f504704470f14ca6ecbc14f30c17dc15a04f344.

Author: saegl5

web_src/css/form.css

@@ -41,11 +41,6 @@ textarea,
   color: var(--color-input-text);
 }
 
-.ui.read-only.checkbox label::before,
-.ui.read-only.checkbox input:checked ~ label::before {
-  opacity: var(--opacity-disabled);
-}
-
 input:hover,
 textarea:hover,
 .ui.input input:hover,
@@ -101,11 +96,6 @@ textarea:focus,
   color: var(--color-input-text);
 }
 
-.ui.read-only.checkbox input:focus ~ label::before,
-.ui.read-only.checkbox input:checked:focus ~ label::before {
-  border-color: var(--color-input-border);
-}
-
 .ui.form .field > label,
 .ui.form .inline.fields > label,
 .ui.form .inline.fields .field > label,
@@ -142,10 +132,6 @@ textarea:focus,
   color: var(--color-input-text);
 }
 
-.ui.read-only.checkbox input:checked ~ label::after {
-  opacity: var(--opacity-disabled);
-}
-
 .ui.radio.checkbox input:focus ~ label::after,
 .ui.radio.checkbox input:checked ~ label::after,
 .ui.radio.checkbox input:focus:checked ~ label::after {