Fixed unit tests: simplify IPC shared memory log cleanup.
Fixed unit tests: simplify IPC shared memory log cleanup.

rudy500/otrs,rudy500/otrs,mburggraf/otrs,s7design/otrs,mburggraf/otrs,rudy500/otrs,s7design/otrs,xhoy/otrs,s7design/otrs,xhoy/otrs,mburggraf/otrs,mburggraf/otrs,rudy500/otrs,mburggraf/otrs,xhoy/otrs,s7design/otrs,xhoy/otrs,rudy500/otrs,xhoy/otrs,s7design/otrs