fix: remove shared libraries from image catalogs

Signed-off-by: Gabriele Bartolini <gabriele.bartolini@enterprisedb.com>

Author: gbartolini

templates/metadata.hcl.tmpl

@@ -12,7 +12,7 @@ metadata = {
   # TODO: Remove this comment block after customizing the file.
   # `shared_preload_libraries`: list libraries to be added to
   # `shared_preload_libraries` in Postgres. Usually empty.
-  # Used in tests and to generate image catalogs.
+  # Used in tests.
   # Example: ["pgaudit"].
   shared_preload_libraries = []