I am not able to delete .WSP file in sharepoint?

Question

Hi,
My Ist query is-->
Erro 1 Unable to delete file "bin\Debug\GC_SalesCommission_APP1.wsp". Access to the path 'D:\@Code_OLD FOLDER\Development\POC\GC_SalesCommission_APP\GC_SalesCommission_APP\bin\Debug\GC_SalesCommission_APP1.wsp' is denied. GC_SalesCommission_APP1

My IInd Query is-->
Error 2 Unable to delete file "obj\Debug\GC_SalesCommission_APP1.csproj.PackageFileList.txt". Access to the path 'D:\@Code_OLD FOLDER\Development\POC\GC_SalesCommission_APP\GC_SalesCommission_APP\obj\Debug\GC_SalesCommission_APP1.csproj.PackageFileList.txt' is denied. GC_SalesCommission_APP1
How i overcome this issues.