Remove FWU serializer abstraction

The FWU protocol is well specified and there's no use case for having
different serializations for the protocol messages. Remove serializer
abstraction and call the serializer function directly.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: Ibbdca3cfb637c993af8e2aaef2cb6acd392990b1
diff --git a/deployments/component-test/component-test.cmake b/deployments/component-test/component-test.cmake
index f39473d..9cb5fe0 100644
--- a/deployments/component-test/component-test.cmake
+++ b/deployments/component-test/component-test.cmake
@@ -121,7 +121,7 @@
 		"components/service/fwu/inspector/mock"
 		"components/service/fwu/inspector/direct"
 		"components/service/fwu/provider"
-		"components/service/fwu/provider/serializer/packed-c"
+		"components/service/fwu/provider/serializer"
 		"components/service/fwu/test/fwu_client/direct"
 		"components/service/fwu/test/fwu_dut"
 		"components/service/fwu/test/fwu_dut/sim"