bus: remove MODULE_LICENSE in non-modules

Since commit 8b41fc44 ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.

So remove it in the files in this commit, none of which can be built as
modules.
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: linux-modules@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

drivers/bus/bt1-apb.c

@@ -416,4 +416,3 @@ module_platform_driver(bt1_apb_driver);
 
 MODULE_AUTHOR("Serge Semin <Sergey.Semin@baikalelectronics.ru>");
 MODULE_DESCRIPTION("Baikal-T1 APB-bus driver");
-MODULE_LICENSE("GPL v2");

drivers/bus/bt1-axi.c

@@ -309,4 +309,3 @@ module_platform_driver(bt1_axi_driver);
 
 MODULE_AUTHOR("Serge Semin <Sergey.Semin@baikalelectronics.ru>");
 MODULE_DESCRIPTION("Baikal-T1 AXI-bus driver");
-MODULE_LICENSE("GPL v2");