relatorio/scripts/getExecutionTime.sh: remove arquivos .dat antigos antes de gerar novos

Signed-off-by: Aryane Ast dos Santos <aryaneast@gmail.com>
Merge branch 'master' of https://github.com/aryane/ci164-optimization
*.dat: Novos arquivos .dat

Signed-off-by: Aryane Ast dos Santos <aryaneast@gmail.com>
Merge branch 'master' of https://github.com/aryane/ci164-optimization