fix typo

- remove unwanted code
	- fix dropdown bug
	- add bar graph for test count

src/components/TestAnalyticsGraph.css

@@ -6,6 +6,7 @@
 
  .tests-count-card {
     width: 80vw;
+    height: 80vh;
     background-color: white;
     margin: 10px;
  }
@@ -14,4 +15,15 @@
     text-align: center;
     font-weight: 600;
     padding: 15px;
- }
+ }
+
+ .axis-grid line {
+  /* stroke: #def; */
+  stroke: lightgrey;
+   /* stroke-opacity: 0.7; */
+   shape-rendering: crispEdges;
+}
+
+.bar {
+   fill: steelblue;
+}