selftests/sgx: Remove extra newlines in test output

The TH_LOG() macro is an optional debug logging function made
available by kselftest itself. When TH_LOG_ENABLED is set it
prints the provided message with additional information and
formatting that already includes a newline.

Providing a newline to the message printed by TH_LOG() results
in a double newline that produces irregular test output.

Remove the unnecessary newlines from the text provided to
TH_LOG().

Fixes: 1b35eb71 ("selftests/sgx: Encpsulate the test enclave creation")
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lkml.kernel.org/r/6fd171ba622aed172a7c5b129d34d50bd0482f24.1644355600.git.reinette.chatre@intel.com