Revert changes to installcheck

Author: spitfire55

bin/installcheck

@@ -11,7 +11,7 @@ export PGDATABASE=postgres
 export PGTZ=UTC
 export PG_COLOR=auto
 
-PATH=~/.pgrx/16.8/pgrx-install/bin/:$PATH
+# PATH=~/.pgrx/15.1/pgrx-install/bin/:$PATH
 
 ####################
 # Ensure Clean Env #
@@ -31,8 +31,6 @@ pg_ctl start -o "-F -c listen_addresses=\"\" -c log_min_messages=WARNING -k $PGD
 # Create the test db
 createdb contrib_regression
 
-cargo pgrx install
-
 #########
 # Tests #
 #########