Update exercises/practice/flatten-array/.meta/config.json

Co-authored-by: Kah Goh <[email protected]>

Author: jagdish-15

exercises/practice/flatten-array/.meta/config.json

@@ -9,7 +9,6 @@
     "jagdish-15",
     "jmrunkle",
     "jtigger",
-    "kahgoh",
     "kytrinyx",
     "lemoncurry",
     "michaelspets",