Remove docs-ja owners from reviews and remove commented reviewers

Author: nasa9084

OWNERS_ALIASES

@@ -112,18 +112,12 @@ aliases:
     - mattiaperi
     - micheleberardi
   sig-docs-ja-owners: # Admins for Japanese content
-    # cstoku
     - inductor
     - nasa9084
   sig-docs-ja-reviews: # PR reviews for Japanese content
     - bells17
-    # cstoku
-    - inductor
     - kakts
     - makocchi-git
-    # MasayaAoyama
-    - nasa9084
-    # oke-py
     - ptux
     - t-inu
   sig-docs-ko-owners: # Admins for Korean content