message: Remove duplicate ex3p tests
diff: //
  // Device sample runs:
  // mpirun -np 4 ex3p -m ../data/star.mesh -pa -d cuda
  +// mpirun -np 4 ex3p -m ../data/star.mesh -no-pa -d cuda
  // mpirun -np 4 ex3p -m ../data/star.mesh -pa -d raja-cuda
  // mpirun -np 4 ex3p -m ../data/star.mesh -pa -d raja-omp
  // mpirun -np 4 ex3p -m ../data/beam-hex.mesh -pa -d cuda
  //
  -// Device w/o partial assembly runs:
  -// mpirun -np 4 ex3p -m ../data/star.mesh -no-pa -d cpu
  -// mpirun -np 4 ex3p -m ../data/star.mesh -no-pa -d cuda
  -//
  // Description: This example code solves a simple electromagnetic diffusion
  // problem corresponding to the second order definite Maxwell
  // equation curl curl E + E = f with boundary condition
  