How to verify complete de-installation of Golden Gate?

Version DB: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0

Version GG: 19.0

Platform: RHEL7/8

On a Linux server where temporarily Golden Gate was installed, all GG components (unregister replicat, stop all processes, drop user GGADMIN/GGSYS) were removed, but following statement still shows "usage":

col NAME      for a20

col DETECTED_USAGES for 999999999999

select /*DBID, */ NAME, VERSION, CURRENTLY_USED,

    DETECTED_USAGES,

    FIRST_USAGE_DATE, LAST_USAGE_DATE

from  DBA_FEATURE_USAGE_STATISTICS

where regexp_like(NAME, '^Golden', 'ic')

-- and  CURRENTLY_USED = 'TRUE'

order by NAME;

NAME         VERSION  CURRE DETECTED_USAGES FIRST_USAGE_DATE  LAST_USAGE_DATE

--------- -------------------- ---------- ----- --------------- ------------------- -------------------