Accepting request 1068680 from home:krop:branches:multimedia:apps

- Don't package the KDDockWidgets development files. It's only
  a third party library that cannot be used for anything.
- Update build constraints
- Spec cleanup

OBS-URL: https://build.opensuse.org/request/show/1068680
OBS-URL: https://build.opensuse.org/package/show/multimedia:apps/musescore?expand=0&rev=122

_constraints

@@ -5,4 +5,16 @@
       <size unit="G">8</size>
     </disk>
   </hardware>
+  <overwrite>
+    <conditions>
+      <arch>ppc64</arch>
+      <arch>ppc64le</arch>
+      <arch>x86_64</arch>
+    </conditions>
+    <hardware>
+      <memory>
+        <size unit="G">9</size>
+      </memory>
+    </hardware>
+  </overwrite>
 </constraints>