Remove useless 'project' commands

'project' declare independent block of CMake code. If block is not designed
to be used stand-alone it make no sense to declare 'project'

examples/CMakeLists.txt

 cmake_minimum_required(VERSION 3.1.3)
-project(examples)
 
 # The examples need a few additional dependencies (e.g. boost filesystem and OpenCV highgui):
 

matlab/CMakeLists.txt

 cmake_minimum_required(VERSION 3.7.0)
-project(matlab-bindings)
 
 # If Matlab_ROOT_DIR is set, the Matlab at that location is used.
 find_package(Matlab COMPONENTS MX_LIBRARY REQUIRED)

python/CMakeLists.txt

 cmake_minimum_required(VERSION 3.1.3)
-project(python-bindings)
 
 # The python bindings may need a few additional dependencies (e.g. boost filesystem and OpenCV), which are
 # included below - at some point it should be checked if they are really needed.

utils/CMakeLists.txt

 cmake_minimum_required(VERSION 3.1.3)
-project(utils)
 
 # The utils need a few additional dependencies (e.g. boost filesystem and OpenCV highgui):