TensorRT source cleanups + CMake cleanup

hpvm/projects/hpvm-tensor-rt/CMakeLists.txt

...m-tensor-rt/dnn_sources/src/fp16/alexnet2_cifar10_half.cc

...vm-tensor-rt/dnn_sources/src/fp16/alexnet_cifar10_half.cc

...s/hpvm-tensor-rt/dnn_sources/src/fp16/lenet_mnist_half.cc

...cts/hpvm-tensor-rt/dnn_sources/src/fp16/mobilenet_half.cc

...-tensor-rt/dnn_sources/src/fp16/mobilenet_shallow_half.cc

...ces/src/fp16/profiling/alexnet2_cifar10_half_profiling.cc

...rces/src/fp16/profiling/alexnet_cifar10_half_profiling.cc

..._sources/src/fp16/profiling/lenet_keras_half_profiling.cc

.../src/fp16/profiling/mobilenet_depthwise_half_profiling.cc

...es/src/fp16/profiling/mobilenet_half_cifar10_profiling.cc

...6/profiling/mobilenet_shallow_depthwise_half_profiling.cc

...es/src/fp16/profiling/mobilenet_shallow_half_profiling.cc

...ces/src/fp16/profiling/resnet18_cifar10_half_profiling.cc

...urces/src/fp16/profiling/vgg16_cifar100_half_profiling.cc

...ources/src/fp16/profiling/vgg16_cifar10_half_profiling.cc

...m-tensor-rt/dnn_sources/src/fp16/resnet18_cifar10_half.cc

...pvm-tensor-rt/dnn_sources/src/fp16/vgg16_cifar100_half.cc

...hpvm-tensor-rt/dnn_sources/src/fp16/vgg16_cifar10_half.cc

...cts/hpvm-tensor-rt/dnn_sources/src/fp32/alexnet2_canny.cc