Drop TrustCor certificates am: cbc6bbaa09 am: 8bc940669d am: 8cbcdcb4e0

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/ca-certificates/+/22945143

Change-Id: Id8a1051eac3adb87d28dafbeae60c134c48d0b3b
Signed-off-by: Automerger Merge Worker <[email protected]>