Do not compile rpcProxy separately
Do not compile rpcProxy separately

rpcProxy is now an app, so should not be compiled separately
in the framework build.

Resolves: LE-11516
Change-Id: I2b71556cb42b9361f02e83f497da0f5ed06cbf62

legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af