Removed migration script of earlier OTRS version.
Removed migration script of earlier OTRS version.

nilei/otrs,nilei/otrs,MBRG/otrs,moritz/otrs,moritz/otrs,muehlbauer/otrs,s7design/otrs,MBRG/otrs,mburggraf/otrs,eliasp/otrs,linearregression/otrs,eliasp/otrs,rudy500/otrs,MBRG/otrs,s7design/otrs,crythias/otrs,crythias/otrs,linearregression/otrs,brandonshults01/otrs,eliasp/otrs,s7design/otrs,s7design/otrs,muehlbauer/otrs,moritz/otrs,MBRG/otrs,linearregression/otrs,thorsteneckel/otrs,xhoy/otrs,thorsteneckel/otrs,rudy500/otrs,MBRG/otrs,xhoy/otrs,crythias/otrs,xhoy/otrs,eliasp/otrs,mburggraf/otrs,mburggraf/otrs,thorsteneckel/otrs,brandonshults01/otrs,mburggraf/otrs,crythias/otrs,thorsteneckel/otrs,muehlbauer/otrs,nilei/otrs,muehlbauer/otrs,rudy500/otrs,moritz/otrs,crythias/otrs,muehlbauer/otrs,xhoy/otrs,brandonshults01/otrs,nilei/otrs,linearregression/otrs,linearregression/otrs,moritz/otrs,nilei/otrs,brandonshults01/otrs,mburggraf/otrs,eliasp/otrs,rudy500/otrs,thorsteneckel/otrs,xhoy/otrs,brandonshults01/otrs,s7design/otrs,rudy500/otrs