Fix CMake 3.31.6 warnings

Remove some superfluous parameters, fixing: CMake Warning (dev) at doc/CMakeLists.txt:218 (add_custom_command): The following keywords are not supported when using add_custom_command(TARGET): DEPENDS. CMake Warning (dev) at doc/CMakeLists.txt:252 (add_custom_command): Keyword WORKING_DIRECTORY requires a value, but none was given. Pick-to: 6.10 Change-Id: I8212fc29241d7843f0708bd91f79976b5890ea52 Reviewed-by: Shyamnath Premnadh <Shyamnath.Premnadh@qt.io>

Author: FriedemannKleint

sources/pyside6/doc/CMakeLists.txt

@@ -221,7 +221,6 @@ if(DOC_OUTPUT_FORMAT STREQUAL "html")
  ${CMAKE_CURRENT_BINARY_DIR}/../../shiboken6/doc/html
  ${CMAKE_CURRENT_BINARY_DIR}/html/shiboken6
  COMMENT "Copying Shiboken docs..."
- DEPENDS "${DOC_DATA_DIR}/webxml/qtcore-index.webxml"
  VERBATIM)
 else()
  if(qhelpgenerator_binary)
@@ -233,7 +232,6 @@ else()
  COMMAND ${python_executable} ${PATCH_QHP_SCRIPT} -p -v pyside6 ${QHP_FILE}
  COMMAND "${qhelpgenerator_binary}" ${QHP_FILE}
  COMMENT "Generating QCH from a QHP file..."
- DEPENDS "${DOC_DATA_DIR}/webxml/qtcore-index.webxml"
  VERBATIM
  )
  else()
@@ -268,7 +266,6 @@ add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${DOC_BASE_DIR}/PySide6/Q
  --additional-documentation=${CMAKE_CURRENT_BINARY_DIR}/${DOC_BASE_DIR}/additionaldocs.lst
  --inheritance-file=${ENV_INHERITANCE_FILE}
  ${global_typesystem}
- WORKING_DIRECTORY ${${module}_SOURCE_DIR}
  COMMENT "Running generator to generate documentation...")
 endif()