remove obsolete file

cmake/Modules/FindZMQ.cmake

@@ -1,19 +0,0 @@
-find_path(ZMQ_INCLUDE_DIR zmq.h)
-find_library(ZMQ_LIBRARY NAMES zmq)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(ZMQ DEFAULT_MSG ZMQ_LIBRARY ZMQ_INCLUDE_DIR)
-
-# Copy the results to the output variables and target.
-if(ZMQ_FOUND)
-  set(ZMQ_LIBRARIES ${ZMQ_LIBRARY})
-  set(ZMQ_INCLUDE_DIRS ${ZMQ_INCLUDE_DIR})
-
-  if(NOT TARGET ZMQ::ZMQ)
-    add_library(ZMQ::ZMQ UNKNOWN IMPORTED)
-    set_target_properties(ZMQ::ZMQ PROPERTIES
-      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-      IMPORTED_LOCATION "${ZMQ_LIBRARY}"
-      INTERFACE_INCLUDE_DIRECTORIES "${ZMQ_INCLUDE_DIR}")
-  endif()
-endif()