Migrated DeleteServerButton to react testing library

test/servers/__snapshots__/DeleteServerButton.test.tsx.snap

@@ -0,0 +1,56 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<DeleteServerButton /> renders expected content 1`] = `
+<span>
+  <span
+    class="button"
+  >
+    Foo bar
+  </span>
+</span>
+`;
+
+exports[`<DeleteServerButton /> renders expected content 2`] = `
+<span>
+  <span
+    class="button"
+  >
+    baz
+  </span>
+</span>
+`;
+
+exports[`<DeleteServerButton /> renders expected content 3`] = `
+<span>
+  <span
+    class="button"
+  >
+    something
+  </span>
+</span>
+`;
+
+exports[`<DeleteServerButton /> renders expected content 4`] = `
+<span>
+  <svg
+    aria-hidden="true"
+    class="svg-inline--fa fa-circle-minus fa-fw "
+    data-icon="circle-minus"
+    data-prefix="fas"
+    focusable="false"
+    role="img"
+    viewBox="0 0 512 512"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <path
+      d="M0 256C0 114.6 114.6 0 256 0C397.4 0 512 114.6 512 256C512 397.4 397.4 512 256 512C114.6 512 0 397.4 0 256zM168 232C154.7 232 144 242.7 144 256C144 269.3 154.7 280 168 280H344C357.3 280 368 269.3 368 256C368 242.7 357.3 232 344 232H168z"
+      fill="currentColor"
+    />
+  </svg>
+  <span
+    class="button"
+  >
+    Remove this server
+  </span>
+</span>
+`;