chore(exhook): empty appup.src

apps/emqx_exhook/src/emqx_exhook.appup.src

@@ -1,33 +1,9 @@
 %% -*-: erlang -*-
 {VSN,
  [
-    {"4.3.2", [
-      {load_module, emqx_exhook_app, brutal_purge, soft_purge, []}
-    ]},
-    {"4.3.1", [
-      {load_module, emqx_exhook_app, brutal_purge, soft_purge, []},
-      {load_module, emqx_exhook_server, brutal_purge, soft_purge, []}
-    ]},
-    {"4.3.0", [
-      {load_module, emqx_exhook_app, brutal_purge, soft_purge, []},
-      {load_module, emqx_exhook_pb, brutal_purge, soft_purge, []},
-      {load_module, emqx_exhook_server, brutal_purge, soft_purge, []}
-    ]},
     {<<".*">>, []}
  ],
  [
-    {"4.3.2", [
-      {load_module, emqx_exhook_app, brutal_purge, soft_purge, []}
-    ]},
-    {"4.3.1", [
-      {load_module, emqx_exhook_app, brutal_purge, soft_purge, []},
-      {load_module, emqx_exhook_server, brutal_purge, soft_purge, []}
-    ]},
-    {"4.3.0", [
-      {load_module, emqx_exhook_app, brutal_purge, soft_purge, []},
-      {load_module, emqx_exhook_pb, brutal_purge, soft_purge, []},
-      {load_module, emqx_exhook_server, brutal_purge, soft_purge, []}
-    ]},
     {<<".*">>, []}
  ]
 }.