delete[] should be called on memory allocated with new[].

Change-Id: Ic21e270a7aa0e6e15132cbc3c454ea4f1e0222ea
Reviewed-on: https://swiftshader-review.googlesource.com/19048Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>