build: remove unnecessary set_target_property

Now that `_add_swift_host_library_single` only deals with host
libraries, it is no longer mutating the name of the library target.
This `set_target_property` is no longer needed.

Author: compnerd

cmake/modules/AddSwift.cmake

@@ -842,11 +842,6 @@ function(_add_swift_host_library_single target)
   set_target_properties("${target}" PROPERTIES BUILD_WITH_INSTALL_RPATH YES)
   set_target_properties("${target}" PROPERTIES FOLDER "Swift libraries")
 
-  set_target_properties(${target}
-      PROPERTIES
-      # Library name (without the variant information)
-      OUTPUT_NAME ${target})
-
   # Handle linking and dependencies.
   add_dependencies_multiple_targets(
       TARGETS "${target}"