lx_kit: remove execution of static ctors

In case where the ported driver or protocol stack is executed from
an already managed environment, e.g. the libc, the execution
of the static constructors will be performed at the appropriate
time.

Issue #4455.

repos/dde_linux/src/lib/lx_kit/init.cc

@@ -58,5 +58,4 @@ void Lx_kit::Pci_fixup_calls::execute(struct pci_dev *pci_dev)
 void Lx_kit::initialize(Genode::Env & env)
 {
 	Lx_kit::env(&env);
-	env.exec_static_constructors();
 }

repos/pc/src/drivers/framebuffer/intel/pc/main.cc

@@ -109,6 +109,7 @@ struct Framebuffer::Driver
 	Driver(Env &env) : env(env)
 	{
 		Lx_kit::initialize(env);
+		env.exec_static_constructors();
 
 		config.sigh(config_handler);
 	}

repos/pc/src/drivers/usb_host/pc/main.cc

@@ -73,6 +73,7 @@ struct Main : private Entrypoint::Io_progress_handler
 		}
 
 		Lx_kit::initialize(env);
+		env.exec_static_constructors();
 
 		genode_usb_init(genode_env_ptr(env),
 		                genode_allocator_ptr(sliced_heap),