Remove unused chart.js dependency

We are not using chart.js anymore, so let's remove it.

package.json

@@ -61,7 +61,6 @@
     "bootstrap": "4.3.1",
     "brace-expansion": "^1.1.8",
     "cache-loader": "^4.1.0",
-    "chart.js": "2.7.2",
     "classlist-polyfill": "^1.2.0",
     "clipboard": "^1.7.1",
     "codemirror": "^5.48.4",

yarn.lock

@@ -2623,29 +2623,6 @@ charenc@~0.0.1:
   resolved "https://registry.yarnpkg.com/charenc/-/charenc-0.0.2.tgz#c0a1d2f3a7092e03774bfa83f14c0fc5790a8667"
   integrity sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc=
 
-chart.js@2.7.2:
-  version "2.7.2"
-  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.7.2.tgz#3c9fde4dc5b95608211bdefeda7e5d33dffa5714"
-  integrity sha512-90wl3V9xRZ8tnMvMlpcW+0Yg13BelsGS9P9t0ClaDxv/hdypHDr/YAGf+728m11P5ljwyB0ZHfPKCapZFqSqYA==
-  dependencies:
-    chartjs-color "^2.1.0"
-    moment "^2.10.2"
-
-chartjs-color-string@^0.5.0:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/chartjs-color-string/-/chartjs-color-string-0.5.0.tgz#8d3752d8581d86687c35bfe2cb80ac5213ceb8c1"
-  integrity sha512-amWNvCOXlOUYxZVDSa0YOab5K/lmEhbFNKI55PWc4mlv28BDzA7zaoQTGxSBgJMHIW+hGX8YUrvw/FH4LyhwSQ==
-  dependencies:
-    color-name "^1.0.0"
-
-chartjs-color@^2.1.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/chartjs-color/-/chartjs-color-2.2.0.tgz#84a2fb755787ed85c39dd6dd8c7b1d88429baeae"
-  integrity sha1-hKL7dVeH7YXDndbdjHsdiEKbrq4=
-  dependencies:
-    chartjs-color-string "^0.5.0"
-    color-convert "^0.5.3"
-
 check-types@^7.3.0:
   version "7.3.0"
   resolved "https://registry.yarnpkg.com/check-types/-/check-types-7.3.0.tgz#468f571a4435c24248f5fd0cb0e8d87c3c341e7d"
@@ -2858,11 +2835,6 @@ collection-visit@^1.0.0:
     map-visit "^1.0.0"
     object-visit "^1.0.0"
 
-color-convert@^0.5.3, color-convert@~0.5.0:
-  version "0.5.3"
-  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-0.5.3.tgz#bdb6c69ce660fadffe0b0007cc447e1b9f7282bd"
-  integrity sha1-vbbGnOZg+t/+CwAHzER+G59ygr0=
-
 color-convert@^1.9.0:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
@@ -2870,7 +2842,12 @@ color-convert@^1.9.0:
   dependencies:
     color-name "1.1.3"
 
-color-name@1.1.3, color-name@^1.0.0:
+color-convert@~0.5.0:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-0.5.3.tgz#bdb6c69ce660fadffe0b0007cc447e1b9f7282bd"
+  integrity sha1-vbbGnOZg+t/+CwAHzER+G59ygr0=
+
+color-name@1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
   integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
@@ -7968,11 +7945,6 @@ moment-mini@^2.22.1:
   resolved "https://registry.yarnpkg.com/moment-mini/-/moment-mini-2.22.1.tgz#bc32d73e43a4505070be6b53494b17623183420d"
   integrity sha512-OUCkHOz7ehtNMYuZjNciXUfwTuz8vmF1MTbAy59ebf+ZBYZO5/tZKuChVWCX+uDo+4idJBpGltNfV8st+HwsGw==
 
-moment@^2.10.2:
-  version "2.24.0"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.24.0.tgz#0d055d53f5052aa653c9f6eb68bb5d12bf5c2b5b"
-  integrity sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg==
-
 monaco-editor-webpack-plugin@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/monaco-editor-webpack-plugin/-/monaco-editor-webpack-plugin-1.7.0.tgz#920cbeecca25f15d70d568a7e11b0ba4daf1ae83"