removed hardcoded cgal directories to use cgal finder

CI/Windows.bat

@@ -49,7 +49,7 @@ IF "%BUILD_PLATFORM%" == "VS2013" (
     )
 
     SET BOOST_ROOT=
-    set CMAKE_CONFIGURATION=%QT_BASE_CONFIG% -DBOOST_ROOT="%LIBPATH%/%ARCHITECTURE%/boost_1_59_0" -DBOOST_LIBRARYDIR="%LIBPATH%/%ARCHITECTURE%/boost_1_59_0/lib64-msvc-12.0" -DCGAL_INCLUDE_DIR="%LIBPATH%/%ARCHITECTURE%/CGAL-4.7/include" -DCGAL_LIBRARY_DIR="%LIBPATH%/%ARCHITECTURE%/CGAL-4.7/lib" -DCGAL_BIN_DIR="%LIBPATH%/%ARCHITECTURE%/CGAL-4.7/bin"
+    set CMAKE_CONFIGURATION=%QT_BASE_CONFIG% -DBOOST_ROOT="%LIBPATH%/%ARCHITECTURE%/boost_1_59_0" -DBOOST_LIBRARYDIR="%LIBPATH%/%ARCHITECTURE%/boost_1_59_0/lib64-msvc-12.0"
 ) 
 
 IF "%BUILD_PLATFORM%" == "VS2015" (
@@ -67,7 +67,7 @@ IF "%BUILD_PLATFORM%" == "VS2017" (
     set VS_PATH="C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\devenv.com"
     set QT_BASE_CONFIG=-DQT5_INSTALL_PATH=C:\Qt\Qt%QT_REV%\%QT_REV%\msvc2017_64%QT_SUFFIX% 
     
-    set CMAKE_CONFIGURATION=%QT_BASE_CONFIG% -DBOOST_ROOT="%LIBPATH%/%ARCHITECTURE%/boost_1_67_0" -DBOOST_LIBRARYDIR="%LIBPATH%/%ARCHITECTURE%/boost_1_67_0/lib64-msvc-14.1" -DCGAL_INCLUDE_DIR="%LIBPATH%/%ARCHITECTURE%/CGAL-4.12/include" -DCGAL_LIBRARY_DIR="%LIBPATH%/%ARCHITECTURE%/CGAL-4.12/lib" -DCGAL_BIN_DIR="%LIBPATH%/%ARCHITECTURE%/CGAL-4.12/bin"
+    set CMAKE_CONFIGURATION=%QT_BASE_CONFIG% -DBOOST_ROOT="%LIBPATH%/%ARCHITECTURE%/boost_1_67_0" -DBOOST_LIBRARYDIR="%LIBPATH%/%ARCHITECTURE%/boost_1_67_0/lib64-msvc-14.1"
 )
 
 "C:\Program Files\CMake\bin\cmake.exe" -DGTEST_PREFIX="%LIBPATH%\%ARCHITECTURE%\%GTESTVERSION%" -G "%GENERATOR%"  -DCMAKE_BUILD_TYPE=Release -DOPENFLIPPER_BUILD_UNIT_TESTS=TRUE -DCMAKE_WINDOWS_LIBS_DIR=%CMAKE_WINDOWS_LIBS_DIR% %CMAKE_CONFIGURATION% ..