delete module's redundant print_status()

- we can already get the running status from ModuleBase and the other misc information is already available through perf or uORB

src/modules/sih/sih.cpp

@@ -55,11 +55,6 @@
 using namespace math;
 using namespace matrix;
 
-int Sih::print_status()
-{
-	PX4_INFO("Running");
-	return 0;
-}
 
 int Sih::custom_command(int argc, char *argv[])
 {

src/modules/sih/sih.hpp

@@ -79,9 +79,6 @@ public:
 	/** @see ModuleBase::run() */
 	void run() override;
 
-	/** @see ModuleBase::print_status() */
-	int print_status() override;
-
 	static float generate_wgn();    // generate white Gaussian noise sample
 
 	// generate white Gaussian noise sample as a 3D vector with specified std