[JENKINS-60866] Remove stupid attributes from f:toggleSwitch (#6871)

[JENKINS-60866] Remove stupid attributes from f:toggleSwitch

Co-authored-by: Daniel Beck <[email protected]>

core/src/main/resources/lib/form/toggleSwitch.jelly

@@ -42,19 +42,10 @@ THE SOFTWARE.
       If this attribute is unspecified or null, it defaults to unchecked, otherwise checked.
     </st:attribute>
     <st:attribute name="id"/>
-    <st:attribute name="onclick"/>
     <st:attribute name="class"/>
     <st:attribute name="invertLabel">
       Move the label of the toggle switch to the opposite side
     </st:attribute>
-    <st:attribute name="readonly">
-      If set to true, this will take precedence over the onclick attribute and prevent the state of the checkbox from
-      being changed.
-
-      Note: if you want an actual read only checkbox then add:
-      &lt;j:set var="readOnlyMode" value="true"/&gt; inside your entry tag
-      See https://www.jenkins.io/doc/developer/views/read-only/#enabling-read-only-view-support
-    </st:attribute>
     <st:attribute name="field">
       Used for databinding. TBD.
     </st:attribute>
@@ -80,7 +71,6 @@ THE SOFTWARE.
            name="${name}"
            value="${value}"
            id="${id}"
-           onclick="${readonly=='true' ? 'return false;' : onclick}"
            class="jenkins-toggle-switch__input ${attrs.class} ${checkUrl!=null?'validated':''}"
            checkUrl="${checkUrl}"
            checkDependsOn="${checkDependsOn}" json="${json}"