base: remove Component::name from API

It turns out that the name function does not have much use in practice
except for naming the thread of the component's initial entrypoint. For
dynamically linked components, this thread is created by the dynamic
linker. It is named "ep" in these cases. Considering that we will
eventually turn all regular components into dynamically linked
executables, the additional information provided by the
Component::name() function remains unused. So it is better to not bother
the component developers with adding boilerplate code.

repos/base-linux/src/test/lx_hybrid_exception/main.cc

@@ -28,7 +28,6 @@ static void exit_on_suspended() { exit(exit_status); }
 
 
 Genode::size_t Component::stack_size() { return 16*1024*sizeof(long); }
-char const * Component::name()         { return "lx_hybrid_exception"; }
 
 
 /*