Remove unused Polymer elements

third_party/polymer/v1_0/bower.json

 {
   "name": "chromium",
   "private": true,
   "dependencies": {
     "carbon-route": "PolymerElements/carbon-route#^0.8.4",
     "font-roboto": "PolymerElements/font-roboto#^1.0.0",
     "iron-a11y-announcer": "PolymerElements/iron-a11y-announcer#^1.0.4",
     "iron-a11y-keys-behavior": "PolymerElements/iron-a11y-keys-behavior#^1.0.0",
     "iron-a11y-keys": "PolymerElements/iron-a11y-keys#^1.0.0",
     "iron-autogrow-textarea": "PolymerElements/iron-autogrow-textarea#^1.0.0",
     "iron-behaviors": "PolymerElements/iron-behaviors#^1.0.0",
     "iron-checked-element-behavior": "PolymerElements/iron-checked-element-behavior#^1.0.0",
     "iron-collapse": "PolymerElements/iron-collapse#^1.0.0",
     "iron-dropdown": "PolymerElements/iron-dropdown#^1.0.0",
     "iron-fit-behavior": "PolymerElements/iron-fit-behavior#^1.0.0",
     "iron-flex-layout": "PolymerElements/iron-flex-layout#^1.0.0",
     "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#^1.0.0",
     "iron-icon": "PolymerElements/iron-icon#^1.0.0",
     "iron-iconset-svg": "PolymerElements/iron-iconset-svg#^1.0.0",
     "iron-icons": "PolymerElements/iron-icons#^1.0.0",
-    "iron-image": "PolymerElements/iron-image#^1.0.0",
     "iron-input": "PolymerElements/iron-input#^1.0.0",
     "iron-list": "PolymerElements/iron-list#^1.0.0",
     "iron-location": "PolymerElements/iron-location#^0.8.1",
     "iron-media-query": "PolymerElements/iron-media-query#^1.0.0",
     "iron-menu-behavior": "PolymerElements/iron-menu-behavior#^1.0.0",
     "iron-meta": "PolymerElements/iron-meta#^1.0.0",
     "iron-overlay-behavior": "PolymerElements/iron-overlay-behavior#^1.0.0",
     "iron-pages": "PolymerElements/iron-pages#^1.0.0",
     "iron-range-behavior": "PolymerElements/iron-range-behavior#^1.0.0",
     "iron-resizable-behavior": "PolymerElements/iron-resizable-behavior#^1.0.0",
     "iron-scroll-target-behavior": "PolymerElements/iron-scroll-target-behavior#^1.0.0",
     "iron-scroll-threshold": "PolymerElements/iron-scroll-threshold#^1.0.0",
     "iron-selector": "PolymerElements/iron-selector#^1.0.0",
     "iron-test-helpers": "PolymerElements/iron-test-helpers#^1.0.0",
     "iron-validatable-behavior": "PolymerElements/iron-validatable-behavior#^1.0.0",
     "neon-animation": "PolymerElements/neon-animation#^1.1.0",
     "paper-behaviors": "PolymerElements/paper-behaviors#^1.0.0",
     "paper-button": "PolymerElements/paper-button#^1.0.0",
-    "paper-card": "PolymerElements/paper-card",
     "paper-checkbox": "PolymerElements/paper-checkbox#^1.0.0",
     "paper-dialog-behavior": "PolymerElements/paper-dialog-behavior#^1.0.0",
     "paper-dialog": "PolymerElements/paper-dialog#^1.0.0",
     "paper-drawer-panel": "PolymerElements/paper-drawer-panel#^1.0.0",
     "paper-dropdown-menu": "PolymerElements/paper-dropdown-menu#^1.0.0",
     "paper-fab": "PolymerElements/paper-fab#^1.0.0",
     "paper-header-panel": "PolymerElements/paper-header-panel#^1.0.0",
     "paper-icon-button": "PolymerElements/paper-icon-button#^1.0.0",
     "paper-input": "PolymerElements/paper-input#^1.0.0",
     "paper-item": "PolymerElements/paper-item#^1.0.0",
     "paper-listbox": "PolymerelEments/paper-listbox#^1.1.2",
     "paper-material": "PolymerElements/paper-material#^1.0.0",
     "paper-menu-button": "PolymerElements/paper-menu-button#^1.0.0",
     "paper-menu": "PolymerElements/paper-menu#^1.1.0",
     "paper-progress": "PolymerElements/paper-progress#^1.0.0",
     "paper-radio-button": "PolymerElements/paper-radio-button#^1.0.0",
     "paper-radio-group": "PolymerElements/paper-radio-group#^1.0.0",
     "paper-ripple": "PolymerElements/paper-ripple#^1.0.0",
     "paper-slider": "PolymerElements/paper-slider#^1.0.0",
     "paper-spinner": "PolymerElements/paper-spinner#^1.0.0",
     "paper-styles": "PolymerElements/paper-styles#^1.0.0",
     "paper-tabs": "PolymerElements/paper-tabs#^1.0.0",
     "paper-toggle-button": "PolymerElements/paper-toggle-button#^1.0.0",
     "paper-toolbar": "PolymerElements/paper-toolbar#^1.0.0",
-    "paper-tooltip": "PolymerElements/paper-tooltip#^1.0.0",
     "polymer-externs": "PolymerLabs/polymer-externs#^1.0.0",
     "polymer": "Polymer/polymer#^v1.0.0",
     "web-animations-js": "web-animations/web-animations-js#^2.0.0"
   }
 }