Adds RemoveSecurity in IAlgorithm interface
Adds RemoveSecurity in IAlgorithm interface

Adds RemoveSecurity in IAlgorithm interface to properly remove a security from a SecurityManager object at AlgorithmManager.

young-zhang/Lean,StefanoRaggi/Lean,jameschch/Lean,tomhunter-gh/Lean,devalkeralia/Lean,StefanoRaggi/Lean,redmeros/Lean,AnshulYADAV007/Lean,devalkeralia/Lean,Mendelone/forex_trading,Jay-Jay-D/LeanSTP,QuantConnect/Lean,redmeros/Lean,young-zhang/Lean,Jay-Jay-D/LeanSTP,jameschch/Lean,kaffeebrauer/Lean,Phoenix1271/Lean,StefanoRaggi/Lean,JKarathiya/Lean,kaffeebrauer/Lean,devalkeralia/Lean,QuantConnect/Lean,andrewhart098/Lean,JKarathiya/Lean,Jay-Jay-D/LeanSTP,young-zhang/Lean,Phoenix1271/Lean,AlexCatarino/Lean,kaffeebrauer/Lean,Phoenix1271/Lean,kaffeebrauer/Lean,AlexCatarino/Lean,Phoenix1271/Lean,redmeros/Lean,AlexCatarino/Lean,andrewhart098/Lean,AnshulYADAV007/Lean,andrewhart098/Lean,QuantConnect/Lean,Jay-Jay-D/LeanSTP,QuantConnect/Lean,jameschch/Lean,jameschch/Lean,AnshulYADAV007/Lean,tomhunter-gh/Lean,tomhunter-gh/Lean,AnshulYADAV007/Lean,AlexCatarino/Lean,redmeros/Lean,devalkeralia/Lean,tomhunter-gh/Lean,young-zhang/Lean,Mendelone/forex_trading,andrewhart098/Lean,Jay-Jay-D/LeanSTP,AnshulYADAV007/Lean,JKarathiya/Lean,JKarathiya/Lean,kaffeebrauer/Lean,StefanoRaggi/Lean,Mendelone/forex_trading,jameschch/Lean,StefanoRaggi/Lean,Mendelone/forex_trading