uninstall unused stackgl packages

stackgl_modules/main.js

@@ -4,15 +4,10 @@ module.exports = {
     delaunay_triangulate: require('delaunay-triangulate'),
     gl_cone3d: require('gl-cone3d'),
     gl_error3d: require('gl-error3d'),
-    gl_heatmap2d: require('gl-heatmap2d'),
     gl_line3d: require('gl-line3d'),
     gl_mesh3d: require('gl-mesh3d'),
-    gl_plot2d: require('gl-plot2d'),
     gl_plot3d: require('gl-plot3d'),
-    gl_pointcloud2d: require('gl-pointcloud2d'),
     gl_scatter3d: require('gl-scatter3d'),
-    gl_select_box: require('gl-select-box'),
-    gl_spikes2d: require('gl-spikes2d'),
     gl_streamtube3d: require('gl-streamtube3d'),
     gl_surface3d: require('gl-surface3d'),
     ndarray: require('ndarray'),

stackgl_modules/package.json

@@ -16,16 +16,11 @@
     "gl-axes3d": "^1.7.1",
     "gl-cone3d": "^1.6.1",
     "gl-error3d": "^1.0.17",
-    "gl-heatmap2d": "^1.1.1",
     "gl-line3d": "^1.2.2",
     "gl-mesh3d": "^2.3.2",
-    "gl-plot2d": "^1.5.0",
     "gl-plot3d": "^2.4.7",
-    "gl-pointcloud2d": "^1.0.3",
     "gl-scatter3d": "^1.4.1",
-    "gl-select-box": "^1.0.4",
     "gl-shader": "4.3.1",
-    "gl-spikes2d": "^1.0.2",
     "gl-spikes3d": "^1.0.11",
     "gl-streamtube3d": "^1.4.2",
     "gl-surface3d": "^1.6.2",