Do not echo PATH

Currently we echo PATH at the start of ever run of the integration test
scritp, it is not immediately apparent why we do this. Presumably it was
done during some debugging effort.

Do not echo `$PATH` when running the integration test script.

Author: tcharding

integration_test/run.sh

@@ -9,8 +9,6 @@ mkdir -p ${TESTDIR}/1
 # To kill any remaining open bitcoind.
 killall -9 bitcoind 2> /dev/null
 
-echo $PATH
-
 BLOCKFILTERARG=""
 if bitcoind -version | grep -q "v0\.\(19\|2\)"; then
     BLOCKFILTERARG="-blockfilterindex=1"