Clean up some triple newlines

These seem to have appeared after the last purge.

contrib/pg_tde/src/access/pg_tde_xlog_smgr.c

@@ -325,7 +325,6 @@ TDEXLogWriteEncryptedPagesOldKeys(int fd, const void *buf, size_t count, off_t o
 	return pg_pwrite(fd, enc_buff, count, offset);
 }
 
-
 /*
  * Encrypt XLog page(s) from the buf and write to the segment file.
  */
@@ -544,7 +543,6 @@ TDEXLogCryptBuffer(const void *buf, void *out_buf, size_t count, off_t offset,
 				 * is part of the key.
 				 */
 
-
 				size_t		end_lsn =
 					data_end.tli < curr_key->range.end.tli ? data_end.lsn :
 					Min(data_end.lsn, curr_key->range.end.lsn);

contrib/pg_tde/src/catalog/tde_principal_key.c

@@ -679,7 +679,6 @@ pg_tde_set_principal_key_internal(Oid providerOid,
 	}
 }
 
-
 /*
  * SQL interface to delete principal key.
  *

contrib/pg_tde/src/keyring/keyring_vault.c

@@ -42,7 +42,6 @@ typedef enum
 	JRESP_MOUNT_INFO_EXPECT_OPTIONS_FIELD,
 } JsonVaultRespMountInfoSemState;
 
-
 typedef enum
 {
 	JRESP_F_UNUSED,