Libraries: Use default constructors/destructors in LibWeb

https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules

"The compiler is more likely to get the default semantics right and
you cannot implement these functions better than the compiler."

Userland/Libraries/LibWeb/DOM/StaticRange.cpp

@@ -17,10 +17,6 @@ StaticRange::StaticRange(Node& start_container, u32 start_offset, Node& end_cont
 {
 }
 
-StaticRange::~StaticRange()
-{
-}
-
 // https://dom.spec.whatwg.org/#dom-staticrange-staticrange
 ExceptionOr<NonnullRefPtr<StaticRange>> StaticRange::create_with_global_object(JS::GlobalObject&, StaticRangeInit& init)
 {