Apollo: Remove unused strings

Change-Id: I88866640066be86dce0c663f7b61aff999392fe4
Automatic translation import

Change-Id: I832d9371bd4431be57c2c6a09f2021a827c2fa99
Automatic translation import

Change-Id: Ia83f4c76033d0b0fa0b1ca6ba93eded20c11f5f6