Housekeeping Tidy using's (#3798)

<!-- Please be sure to read the
[Contribute](https://github.com/reactiveui/reactiveui#contribute)
section of the README -->

**What kind of change does this PR introduce?**
<!-- Bug fix, feature, docs update, ... -->

update

**What is the current behavior?**
<!-- You can also link to an open issue here. -->

usings exist where static instances have been decalred

**What is the new behavior?**
<!-- If this is a feature change -->

Using's tidied, removed stray files

**What might this PR break?**

none expected

**Please check if the PR fulfills these requirements**
- [ ] Tests for the changes have been added (for bug fixes / features)
- [ ] Docs have been added / updated (for bug fixes / features)

**Other information**:

README.md

@@ -157,26 +157,20 @@ See [Contribution Guidelines](https://www.reactiveui.net/contribute/) for furthe
         <a href="https://github.com/chrispulman">Chris Pulman</a>
         <p>United Kingdom</p>
       </td>
+    </tr>
+    <tr>
       <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/rlittlesii.png?s=150">
         <br>
         <a href="https://github.com/rlittlesii">Rodney Littles II</a>
         <p>Texas, USA</p>
       </td>
-    </tr>
-    <tr>
       <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/cabauman.png?s=150">
         <br>
         <a href="https://github.com/cabauman">Colt Bauman</a>
         <p>South Korea</p>
       </td>
-      <td align="center" valign="top" width="105">
-        <img width="100" height="100" src="https://github.com/worldbeater.png?s=150">
-        <br>
-        <a href="https://github.com/worldbeater">Artyom Gorchakov</a>
-        <p>Moscow, Russia</p>
-      </td>
     </tr>
   </tbody>
 </table>
@@ -189,44 +183,52 @@ The following have been core team members in the past.
 <table>
   <tbody>
     <tr>
-      <td align="center" valign="top">
+      <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/ghuntley.png?s=150">
         <br>
         <a href="https://github.com/ghuntley">Geoffrey Huntley</a>
         <p>Sydney, Australia</p>
       </td>
-      <td align="center" valign="top">
+      <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/kentcb.png?s=150">
         <br>
         <a href="https://github.com/kentcb">Kent Boogaart</a>
         <p>Brisbane, Australia</p>
       </td>
-      <td align="center" valign="top">
+      <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/olevett.png?s=150">
         <br>
         <a href="https://github.com/olevett">Olly Levett</a>
         <p>London, United Kingdom</p>
       </td>
     </tr>
     <tr>
-      <td align="center" valign="top">
+      <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/anaisbetts.png?s=150">
         <br>
         <a href="https://github.com/anaisbetts">Anaïs Betts</a>
         <p>San Francisco, USA</p>
       </td>
-      <td align="center" valign="top">
+      <td align="center" valign="top" width="105">
         <img width="100" height="100" src="https://github.com/shiftkey.png?s=150">
         <br>
         <a href="https://github.com/shiftkey">Brendan Forster</a>
         <p>Melbourne, Australia</p>
       </td>
-      <td align="center" valign="top">
-        <img width="120" height="100" src="https://github.com/clairernovotny.png?s=150">
+      <td align="center" valign="top" width="105">
+        <img width="100" height="100" src="https://github.com/clairernovotny.png?s=150">
         <br>
         <a href="https://github.com/clairernovotny">Claire Novotny</a>
         <p>New York, USA</p>
       </td>
+    </tr>
+    <tr>
+      <td align="center" valign="top" width="105">
+        <img width="100" height="100" src="https://github.com/worldbeater.png?s=150">
+        <br>
+        <a href="https://github.com/worldbeater">Artyom Gorchakov</a>
+        <p>Moscow, Russia</p>
+      </td>
      </tr>
   </tbody>
 </table>