chore(revert): revert previously merged PRs (carbon-design-system#5689)

* Revert "feat(conditionBuilder): unit test cases for keyboard navigation (carbon-design-system#5688)"

This reverts commit 7f4f39a.

* Revert "fix(CreateFullPage): beadcrumbs style issue (carbon-design-system#5599)"

This reverts commit 3a9e647.

packages/ibm-products-styles/src/__tests__/__snapshots__/styles.test.js.snap

@@ -2282,10 +2282,6 @@ p.c4p--about-modal__copyright-text:first-child {
   border-top: 1px solid var(--cds-layer-accent-01, #e0e0e0);
 }
 
-.c4p--create-full-page__header button:first-of-type {
-  background: none;
-}
-
 /* One or two values
   * - width (first value)
   * - min-width (optional second value)

packages/ibm-products-styles/src/components/CreateFullPage/_create-full-page.scss

@@ -176,10 +176,3 @@ $step-block-class: #{c4p-settings.$pkg-prefix}--create-full-page__step;
 .#{$block-class} .#{$block-class}__buttons {
   border-top: 1px solid $layer-accent-01;
 }
-
-.#{$block-class}__header {
-  /* stylelint-disable-next-line max-nesting-depth */
-  button:first-of-type {
-    background: none;
-  }
-}