Remove unused svgo dependency.

dev_mode/package.json

@@ -75,8 +75,6 @@
     "source-map-loader": "~0.2.4",
     "style-loader": "~1.0.1",
     "svg-url-loader": "~3.0.3",
-    "svgo": "~1.3.2",
-    "svgo-loader": "~2.2.1",
     "terser-webpack-plugin": "^2.3.0",
     "url-loader": "~3.0.0",
     "webpack": "^4.41.2",

examples/console/package.json

@@ -25,7 +25,6 @@
     "raw-loader": "~4.0.0",
     "rimraf": "~3.0.0",
     "style-loader": "~1.0.1",
-    "svgo-loader": "~2.2.1",
     "typescript": "~3.7.3",
     "url-loader": "~3.0.0",
     "watch": "~1.0.2",

jupyterlab/staging/package.json

@@ -75,8 +75,6 @@
     "source-map-loader": "~0.2.4",
     "style-loader": "~1.0.1",
     "svg-url-loader": "~3.0.3",
-    "svgo": "~1.3.2",
-    "svgo-loader": "~2.2.1",
     "terser-webpack-plugin": "^2.3.0",
     "url-loader": "~3.0.0",
     "webpack": "^4.41.2",