Revert streaming changes (#4031)

* Revert "Fix bad streaming performance in some cases (#4013)"
This reverts commit 682b02b.

* Revert "Fix streaming crash (#4030)"
This reverts commit 003b001.

Author: TheNormalnij

Client/mods/deathmatch/logic/CClientStreamSector.h

@@ -37,7 +37,6 @@ class CClientStreamSector
     void                                       Remove(CClientStreamElement* pElement) { m_Elements.remove(pElement); }
     std::list<CClientStreamElement*>::iterator Begin() { return m_Elements.begin(); }
     std::list<CClientStreamElement*>::iterator End() { return m_Elements.end(); }
-    std::list<CClientStreamElement*>&          GetElements() { return m_Elements; }
 
     void         AddElements(std::list<CClientStreamElement*>* pList);
     void         RemoveElements(std::list<CClientStreamElement*>* pList);

Client/mods/deathmatch/logic/CClientStreamSectorRow.h

@@ -31,7 +31,6 @@ class CClientStreamSectorRow
     void                                      Add(CClientStreamSector* pSector);
     void                                      Remove(CClientStreamSector* pSector);
     unsigned int                              CountSectors() { return m_Sectors.size(); }
-    std::list<CClientStreamSector*>&          GetList() noexcept { return m_Sectors; }
 
     bool DoesContain(CVector& vecPosition);
     bool DoesContain(float fY);