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>
diff --git a/lib/tpm.c b/lib/tpm.c
index bc9652d..1b5c2d0 100644
--- a/lib/tpm.c
+++ b/lib/tpm.c
@@ -820,7 +820,6 @@
 	return TPM_SUCCESS;
 }
 
-
 uint32_t tpm_terminate_auth_session(uint32_t auth_handle)
 {
 	const uint8_t command[18] = {