In commit 03ca6495 and
commit ff5d306e
we forgot to remove some Google copyright notices related to
a contribution of using atomic memory access in the old InnoDB
mutex_t and rw_lock_t implementation.

The copyright notices had been mostly added in
commit c6232c06
due to commit a1bb700f.

The following Google contributions remain:
* some logic related to the parameter innodb_io_capacity
* innodb_encrypt_tables, added in MariaDB Server 10.1