docs(plat): remove TC1 entry from the deprecation table

Since the TC1 platform has been eliminated from the TF-A source code
and CI script repository, updated the deprecation table to remove its
entry.

Change-Id: I93ae03e1f810666e9a6d0c6172a322ff1e960c71
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
1 file changed