Remove duplicate test step (#31166)

As the comment indicated, this apparently was necessary to get stuff
built the first time, but does not appear to be necessary anymore and
looks to be causing occasional flakiness, so let's remove it.

.github/workflows/shared-component-visual-tests.yaml

@@ -55,12 +55,6 @@ jobs:
               if: steps.playwright-cache.outputs.cache-hit != 'true'
               run: "yarn playwright install --with-deps --only-shell"
 
-            - name: Build storybook dependencies
-              # When the first test is ran, it will fail because the dependencies are not yet built.
-              # This step is to ensure that the dependencies are built before running the tests.
-              run: "yarn --cwd packages/shared-components test:storybook:ci"
-              continue-on-error: true
-
             - name: Run Visual tests
               run: "yarn --cwd packages/shared-components test:storybook:ci"