META file includes private libraries

This is incorrect as those aren't installed

test/blackbox-tests/test-cases/meta-gen/jbuild

@@ -6,10 +6,13 @@
   (public_name foobar)
   (synopsis "contains \"quotes\"")))
 
+(library
+ ((name privatelib)))
+
 (library
  ((name foobar_baz)
   (public_name foobar.baz)
-  (libraries (bytes))
+  (libraries (bytes privatelib))
   (modes (byte))
   (synopsis "sub library with modes set to byte")))
 

test/blackbox-tests/test-cases/meta-gen/run.t

@@ -8,7 +8,7 @@
   package "baz" (
     directory = "baz"
     description = "sub library with modes set to byte"
-    requires = "bytes"
+    requires = "bytes privatelib"
     archive(byte) = "foobar_baz.cma"
     archive(native) = "foobar_baz.cmxa"
     plugin(byte) = "foobar_baz.cma"