Remove bobcatfish and lbernick from OWNERS 😿

@bobcatfish and @lbernick are not working on tektoncd anymore, thus it
doesn't make sense to keep them as OWNERS in the project.

Thank you both for everything you did on the project 🤗.

Signed-off-by: Vincent Demeester <vdemeest@redhat.com>

Author: vdemeester

OWNERS_ALIASES

@@ -1,13 +1,11 @@
 aliases:
   pipeline-approvers:
   - afrittoli
-  - bobcatfish
   - dibyom
   - ImJasonH
   - vdemeester
   - pritidesai
   - jerop
-  - lbernick
   - abayer
   - wlynch
   - yongxuanzhang
@@ -16,7 +14,6 @@ aliases:
 
   pipeline-reviewers:
   - afrittoli
-  - bobcatfish
   - dibyom
   - vdemeester
   - pritidesai
@@ -26,19 +23,16 @@ aliases:
 
   apis-approvers:
   - afrittoli
-  - bobcatfish
   - dibyom
   - ImJasonH
   - vdemeester
   - pritidesai
   - jerop
-  - lbernick
   - abayer
   - wlynch
 
   productivity-approvers:
   - afrittoli
-  - bobcatfish
   - vdemeester
 
 # Alumni ❤️
@@ -48,3 +42,5 @@ aliases:
 # aaron-prindle
 # sbwsg
 # dlorenc
+# lbernick
+# bobcatfish