Remove special case of finding static zlib library

Don't implement all the find functions ourselves, rely on hdf5-config instead.

cmake/thirdParties.cmake

@@ -66,21 +66,6 @@ if(MATIO_WITH_ZLIB)
         matio_create_zlib(zlib)
     else()
         find_package(ZLIB 1.2.3)
-
-        # try to find a static zlib version
-        if((NOT ZLIB_FOUND OR NOT MATIO_SHARED) AND ZLIB_INCLUDE_DIRS AND NOT ZLIB_STATIC_LIBRARY)
-            get_filename_component(ZLIB_DIR ${ZLIB_LIBRARY} DIRECTORY)
-            find_library(ZLIB_STATIC_LIBRARY libzlib PATHS ${ZLIB_DIR} ${ZLIB_ROOT}/lib ${PROJECT_BINARY_DIR}/lib)
-            if(ZLIB_STATIC_LIBRARY)
-                if(NOT TARGET ZLIB::ZLIB)
-                    set(ZLIB_FOUND TRUE)
-                    add_library(ZLIB::ZLIB UNKNOWN IMPORTED)
-                    set_target_properties(ZLIB::ZLIB PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${ZLIB_INCLUDE_DIRS}")
-                endif()
-            set_target_properties(ZLIB::ZLIB PROPERTIES IMPORTED_LOCATION "${ZLIB_STATIC_LIBRARY}")
-            message(STATUS "Found ZLIB: ${ZLIB_STATIC_LIBRARY} (static library)")
-            endif()
-        endif()
     endif()
 
     if(ZLIB_FOUND)