chore(tc): remove TC2 platform variant

Remove TC2 platform support which was deprecated in the last release.

Change-Id: Ibf4a94a0168151ebc66eaca044a143c51e974a1f
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/docs/design_documents/measured_boot.rst b/docs/design_documents/measured_boot.rst
index 1f76770..a9d2fa9 100644
--- a/docs/design_documents/measured_boot.rst
+++ b/docs/design_documents/measured_boot.rst
@@ -231,9 +231,9 @@
    - Public key data size is passed as the third argument to this function.
    - This function must return 0 on success, a signed integer error code
      otherwise.
-   - In TC2 platform, this function is used to calculate the hash of the given
-     key and forward this hash to |RSE| alongside the measurement of the image
-     which the key signs.
+   - In Total Compute platform, this function is used to calculate the hash
+     of the given key and forward this hash to |RSE| alongside the measurement
+     of the image which the key signs.
 
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