Removed erroneous --permissions flag from export example

Author: rjrudin

docs/export/export-rows.md

@@ -65,7 +65,6 @@ a notional example of doing so:
 ```
 ./bin/flux export-jdbc \
     --connection-string "flux-example-user:password@localhost:8004" \
-    --permissions flux-example-role,read,flux-example-role,update \
     --query "op.fromView('example', 'employee', '')" \
     --jdbc-url "jdbc:postgresql://localhost/example?user=postgres&password=postgres" \
     --jdbc-driver "org.postgresql.Driver" \
@@ -76,7 +75,6 @@ a notional example of doing so:
 ```
 bin\flux export-jdbc ^
     --connection-string "flux-example-user:password@localhost:8004" ^
-    --permissions flux-example-role,read,flux-example-role,update ^
     --query "op.fromView('example', 'employee', '')" ^
     --jdbc-url "jdbc:postgresql://localhost/example?user=postgres&password=postgres" ^
     --jdbc-driver "org.postgresql.Driver" ^