toolkit-showcase: clean up dependencies

These are all transitive dependencies (or unused) so they get pulled in
anyway.

toolkit-showcase/package.json

@@ -51,17 +51,9 @@
     "@dbp-toolkit/person-select": "^0.2.0",
     "@dbp-toolkit/organization-select": "^0.2.0",
     "@open-wc/scoped-elements": "^1.3.3",
-    "fabric": "^4.2.0",
-    "file-saver": "^2.0.2",
     "highlight.js": "^11.0.0",
-    "i18next": "^20.0.0",
-    "jszip": "^3.5.0",
     "lit-element": "^2.4.0",
-    "lit-html": "^1.3.0",
-    "pdfjs-dist": "^2.4.456",
-    "tabulator-tables": "^4.7.0",
-    "universal-router": "^9.0.1",
-    "webdav": "^3.3.0"
+    "lit-html": "^1.3.0"
   },
   "scripts": {
     "build": "rollup -c",

toolkit-showcase/rollup.config.js

@@ -160,13 +160,6 @@ Dependencies:
                 {src: 'assets/icon-*.png', dest: 'dist/' + await getDistPath(pkg.name)},
                 {src: 'assets/manifest.json', dest: 'dist', rename: pkg.name + '.manifest.json'},
                 {src: 'assets/silent-check-sso.html', dest:'dist'},
-                {
-                    src: await getPackagePath('pdfjs-dist', 'es5/build/pdf.worker.js'),
-                    dest: 'dist/' + await getDistPath(pkg.name, 'pdfjs'),
-                    // enable signatures in pdf preview
-                    transform: (contents) => contents.toString().replace('"Sig"', '"Sig-patched-show-anyway"')
-                },
-                {src: await getPackagePath('pdfjs-dist', 'cmaps/*'), dest: 'dist/' + await getDistPath(pkg.name, 'pdfjs')}, // do we want all map files?
                 {src: await getPackagePath('@dbp-toolkit/font-source-sans-pro', 'files/*'), dest: 'dist/' + await getDistPath(pkg.name, 'fonts/source-sans-pro')},
                 {src: await getPackagePath('@dbp-toolkit/common', 'src/spinner.js'), dest: 'dist/' + await getDistPath(pkg.name)},
                 {src: await getPackagePath('@dbp-toolkit/common', 'misc/browser-check.js'), dest: 'dist/' + await getDistPath(pkg.name)},