tc0: Remove platform code
TC0 platform was deprecated about a year ago. Now remove the platform code as per the project's rules.
858076b2: (tc0: Deprecate platform)
Signed-off-by: Nicola Mazzucato nicola.mazzucato@arm.com Change-Id: I41b63ead658ee2592c3e422a3cd514c120156e01