remove default destructors

src/ast/macros/cond_macro.h

@@ -39,10 +39,7 @@ public:
         m_weight(weight) {
         SASSERT(!m_hint || !m_cond);
     }
-    
-    ~cond_macro() {
-    }
-    
+
     func_decl * get_f() const { return m_f; }
     
     expr * get_def() const { return m_def; }

src/ast/macros/macro_finder.cpp

@@ -269,9 +269,6 @@ macro_finder::macro_finder(ast_manager & m, macro_manager & mm):
     m_autil(m) {
 }
 
-macro_finder::~macro_finder() {
-}
-
 bool macro_finder::expand_macros(expr_ref_vector const& exprs, proof_ref_vector const& prs, expr_dependency_ref_vector const& deps,  expr_ref_vector & new_exprs, proof_ref_vector & new_prs, expr_dependency_ref_vector & new_deps) {
     TRACE("macro_finder", tout << "starting expand_macros:\n";
           m_macro_manager.display(tout););

src/ast/macros/macro_finder.h

@@ -43,7 +43,6 @@ class macro_finder {
 
 public:
     macro_finder(ast_manager & m, macro_manager & mm);
-    ~macro_finder();
     void operator()(expr_ref_vector const& exprs, proof_ref_vector const& prs, expr_dependency_ref_vector const& deps, expr_ref_vector & new_exprs, proof_ref_vector & new_prs, expr_dependency_ref_vector & new_deps);
     void operator()(unsigned n, justified_expr const* fmls, vector<justified_expr>& new_fmls);
 };

src/ast/macros/macro_manager.cpp

@@ -41,9 +41,6 @@ macro_manager::macro_manager(ast_manager & m):
     m_util.set_forbidden_set(&m_forbidden_set);
 }
 
-macro_manager::~macro_manager() {
-}
-
 void macro_manager::push_scope() {
     m_scopes.push_back(scope());
     scope & s              = m_scopes.back();

src/ast/macros/macro_manager.h

@@ -64,7 +64,6 @@ class macro_manager {
 
 public:
     macro_manager(ast_manager & m);
-    ~macro_manager();
     void copy_to(macro_manager& dst);
     ast_manager & get_manager() const { return m; }
     macro_util & get_util() { return m_util; }

src/ast/macros/quasi_macros.cpp

@@ -31,9 +31,6 @@ quasi_macros::quasi_macros(ast_manager & m, macro_manager & mm) :
   m_new_qsorts(m) {
 }
 
-quasi_macros::~quasi_macros() {
-}
-
 void quasi_macros::find_occurrences(expr * e) {
     unsigned j;
     m_todo.reset();

src/ast/macros/quasi_macros.h

@@ -60,7 +60,6 @@ class quasi_macros {
 
 public:
     quasi_macros(ast_manager & m, macro_manager & mm);
-    ~quasi_macros();
 
     /**
        \brief Find pure function macros and apply them.