Revert "Add boolean method for knowing the buildVariableFamily r..."

Revert submission 26718990-canBuildVariableFamily

Reason for revert: canBuildVariableFamily is not necessary

Reverted changes: /q/submissionid:26718990-canBuildVariableFamily

Change-Id: Ia052bd350191d6b77c8737423dfbef1b6524973c
2 files changed