dont explicitly target flatc when building a wheel

Author: jathu

setup.py

@@ -652,10 +652,6 @@ def run(self):
 
         build_args = [f"-j{self.parallel}"]
 
-        # TODO(dbort): Try to manage these targets and the cmake args from the
-        # extension entries themselves instead of hard-coding them here.
-        build_args += ["--target", "flatc"]
-
         if ShouldBuild.pybindings():
             cmake_args += [
                 "-DEXECUTORCH_BUILD_PYBIND=ON",