Remove <experimental/coroutine> from the module map for now. It doesn't work unless modules are enabled

llvm-svn: 303838
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 39b56d80a187c337b6b34a0bd75869f5681a47a8
diff --git a/include/module.modulemap b/include/module.modulemap
index 737ef9a..ad765c0 100644
--- a/include/module.modulemap
+++ b/include/module.modulemap
@@ -501,10 +501,12 @@
       header "experimental/chrono"
       export *
     }
-    module coroutine {
-      header "experimental/coroutine"
-      export *
-    }
+    // FIXME: This module only works when -fcoroutines-ts is enabled and it
+    // breaks the modules build otherwise.
+    // module coroutine {
+    //  header "experimental/coroutine"
+    //  export *
+    // }
     module deque {
       header "experimental/deque"
       export *