update owners (#1888)

#### What type of PR is this?

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/kind bug
/kind cleanup
/kind documentation
/kind feature
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#### What this PR does / why we need it:

Update the owners as people who haven't reviewed / approved for a while
keep getting pings / notifications about reviewing.

#### Which issue(s) this PR fixes:
<!--
*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
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N/A

#### Special notes for your reviewer:

N/A

Signed-off-by: Charlie Drage <charlie@charliedrage.com>

OWNERS

@@ -3,18 +3,10 @@
 
 reviewers:
   - cdrage
-  - janetkuo
-  - kadel 
-  - ngtuna
-  - sebgoa
   - hangyan
   - TessaIO
 
 approvers:
   - cdrage
-  - janetkuo
-  - kadel 
-  - ngtuna
-  - sebgoa
   - hangyan
   - TessaIO