chore: Stop suppressing pod install failures

Pod install failures were suppressed originally to make cross-platform
development easier, as they would fail on Windows and Linux (where you
would presumably be developing with Android which does not require this
step). However, since the introduction of the new setup script, this
step will not run on non-macOS machines by default so this error
suppression is no longer needed.

This will make install errors easier to discover, saving developer
time.

package.json

@@ -7,7 +7,7 @@
     "watch": "./scripts/build.sh watcher watch",
     "watch:clean": "./scripts/build.sh watcher clean",
     "clean:ios": "rm -rf ios/build",
-    "pod:install": "command -v pod && bundle exec pod install --project-directory=ios || echo \"pod command not found. Skipping pod install\"",
+    "pod:install": "bundle exec pod install --project-directory=ios",
     "gem:bundle:install": "bundle install --gemfile=ios/Gemfile",
     "clean:ppom": "rm -rf ppom/dist ppom/node_modules app/lib/ppom/ppom.html.js",
     "clean:android": "rm -rf android/app/build",