Remove the revocation of all function executions

I need to execute some functions in public for citext, such as
texticregexeq, or guest users would not be able to login.

deploy/encrypt_password.sql

@@ -21,6 +21,8 @@ language plpgsql;
 comment on function encrypt_password() is
 'Encrypts and salts the input password with the blowfish encryption algorithm';
 
+revoke execute on function encrypt_password() from public;
+
 create trigger encrypt_password
 before insert or update
 on "user"

deploy/ensure_role_exists.sql

@@ -20,6 +20,8 @@ language plpgsql;
 comment on function ensure_role_exists() is
 'Makes sure that a role given to a user is a valid, existing role in the cluster.';
 
+revoke execute on function ensure_role_exists() from public;
+
 create trigger ensure_role_exists
 after insert or update
 on "user"

deploy/find_user_role.sql

@@ -21,4 +21,6 @@ stable;
 comment on function find_user_role(email, text) is
 'Return the database role assigned to the user with the given email and password';
 
+revoke execute on function find_user_role(email, text) from public;
+
 commit;

deploy/login.sql

@@ -28,6 +28,7 @@ security definer;
 comment on function login(email, text) is
 'Checks that the email and password pair is valid and returns the user’s databasse role.';
 
+revoke execute on function login(email, text) from public;
 grant execute on function login(email, text) to guest;
 
 commit;

deploy/schema_public.sql

@@ -6,8 +6,6 @@ begin;
 revoke create on schema public from public;
 revoke usage on schema public from public;
 
-alter default privileges revoke execute on functions from public;
-
 grant usage on schema public to guest;
 grant usage on schema public to invoicer;
 grant usage on schema public to admin;