deleted legend.tsx, not used in any imports

Author: Samuel Tran

package.json

@@ -166,10 +166,10 @@
     "acorn-jsx": "^5.2.0",
     "apexcharts": "^3.23.1",
     "chai": "^4.2.0",
-    "d3": "^5.16.0",
-    "d3-scale-chromatic": "^2.0.0",
+    "d3": "^7.6.1",
+    "d3-scale-chromatic": "^3.0.0",
     "d3-shape": "^2.0.0",
-    "d3-zoom": "^1.8.3",
+    "d3-zoom": "^3.0.0",
     "immer": "^9.0.12",
     "intro.js": "^5.0.0",
     "intro.js-react": "^0.6.0",