Remove license header on target test files

Status Job ID Name Coverage
  Windows
passed #485428
Windows10
masterJobWindows

00:02:11

 
  Linux
passed #485430
integrationCaffe2JobLinux

00:05:37

passed #485431
integrationGluonJobLinux

00:07:10

passed #485429
integrationMXNetJobLinux

00:07:07

passed #485433
integrationPythonWrapperTest

00:05:39

passed #485432
integrationTensorflowJobLinux

00:08:51

passed #485434
UnitTestJobLinux

00:05:48