MDEV-546 : error when compiling client library - incorrect client_settings.h

Remove sql directory from the include path to workaround the problem. This removes the ambiguity , since then only one client_settings.h will be in the include paths

libmysql/CMakeLists.txt

@@ -17,7 +17,6 @@ INCLUDE_DIRECTORIES(
   ${CMAKE_SOURCE_DIR}/include
   ${CMAKE_SOURCE_DIR}/libmysql
   ${CMAKE_SOURCE_DIR}/regex
-  ${CMAKE_SOURCE_DIR}/sql
   ${CMAKE_SOURCE_DIR}/strings
   ${SSL_INCLUDE_DIRS}
   ${SSL_INTERNAL_INCLUDE_DIRS}