Drop Python2 support.

modules/python/CMakeLists.txt

@@ -4,13 +4,9 @@
 if(DEFINED OPENCV_INITIAL_PASS)  # OpenCV build
 
 if(ANDROID OR APPLE_FRAMEWORK OR WINRT)
-  ocv_module_disable_(python2)
   ocv_module_disable_(python3)
   return()
 elseif(BUILD_opencv_world OR (WIN32 AND CMAKE_BUILD_TYPE STREQUAL "Debug"))
-  if(NOT DEFINED BUILD_opencv_python2)
-    set(__disable_python2 ON)
-  endif()
   if(NOT DEFINED BUILD_opencv_python3)
     set(__disable_python3 ON)
   endif()
@@ -20,17 +16,11 @@ add_subdirectory(bindings)
 
 add_subdirectory(test)
 
-if(__disable_python2)
-  ocv_module_disable_(python2)
-endif()
 if(__disable_python3)
   ocv_module_disable_(python3)
-endif()
-if(__disable_python2 AND __disable_python3)
   return()
 endif()
 
-add_subdirectory(python2)
 add_subdirectory(python3)
 
 else()  # standalone build

modules/python/python2/CMakeLists.txt

@@ -1,15 +0,0 @@
-if(NOT PYTHON2_INCLUDE_PATH OR NOT PYTHON2_NUMPY_INCLUDE_DIRS)
-  ocv_module_disable(python2)
-endif()
-
-set(the_description "The python2 bindings")
-set(MODULE_NAME python2)
-# Buildbot requires Python 2 to be in root lib dir
-set(MODULE_INSTALL_SUBDIR "")
-
-set(PYTHON PYTHON2)
-
-include(../common.cmake)
-
-unset(MODULE_NAME)
-unset(MODULE_INSTALL_SUBDIR)