tpm: remove redundant blank line

Fix following checkpatch.pl issue in TPM-related code:

    CHECK: Please don't use multiple blank lines

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

lib/tpm.c

@@ -820,7 +820,6 @@ static uint32_t verify_response_auth(uint32_t command_code,
 	return TPM_SUCCESS;
 }
 
-
 uint32_t tpm_terminate_auth_session(uint32_t auth_handle)
 {
 	const uint8_t command[18] = {