Remove unused SCH_SYMBOL::GetAllPins()

eeschema/sch_symbol.h

@@ -522,13 +522,6 @@ public:
      */
     std::vector<SCH_PIN*> GetPins( const SCH_SHEET_PATH* aSheet = nullptr ) const;
 
-    /**
-     * Retrieve all SCH_PINs (from all sheets)
-     *
-     * @return a vector of pointers (non-owning) to SCH_PINs
-     */
-    std::vector<SCH_PIN*> GetAllPins() const;
-
 
     std::vector<std::unique_ptr<SCH_PIN>>& GetRawPins() { return m_pins; }