We no longer support static sql for metrics in the manifest, so don't…

… try to show an empty code block (#435)

* Because we no longer support static sql for metrics in the manifest, we should not show an empty sql codeblock in dbt docs for metrics

* Add changelog entry

---------

Co-authored-by: Jeremy Cohen <jeremy@dbtlabs.com>

.changes/unreleased/Docs-20230718-192422.yaml

@@ -0,0 +1,6 @@
+kind: Docs
+body: Remove static SQL codeblock for metrics
+time: 2023-07-18T19:24:22.155323+02:00
+custom:
+  Author: marcodamore
+  Issue: "436"

src/app/docs/metric.html

@@ -34,7 +34,6 @@ <h1>
                 <li ui-sref-active='active'><a ui-sref="dbt.metric({'#': 'details'})">Details</a></li>
                 <li ui-sref-active='active'><a ui-sref="dbt.metric({'#': 'description'})">Description</a></li>
                 <li ui-sref-active='active' ng-show = "parentsLength != 0"><a ui-sref="dbt.metric({'#': 'depends_on'})">Depends On</a></li>
-                <li ui-sref-active='active'><a ui-sref="dbt.metric({'#': 'code'})">SQL</a></li>
             </ul>
         </div>
     </div>
@@ -67,13 +66,6 @@ <h6>Depends On</h6>
                 </div>
             </section>
 
-
-            <section class="section">
-                <div class="section-target" id="code"></div>
-                <div class="section-content">
-                    <code-block versions="versions" default="default_version" language="language"></code-block>
-                </div>
-            </section>
         </div>
     </div>
 </div>