Assorted gpMgmt/bin Makefile fixups

The tree I was working off clearly had stale files, which led me to
include two utils which were removed some time ago: gpcheckutil.py
and gpcheck.py. Remove these two from their respective Makefiles.

Also fix a Bash error in the Stream symlink test, the logoical AND
requires [[ .. ]]; rather than [ .. ];.

Both of these spotted while repeatedly running make install with
trees in various states.

gpMgmt/bin/gppylib/Makefile

@@ -7,7 +7,7 @@ SUBDIRS= commands data db gpMgmttest operations programs system util
 
 $(recurse)
 
-PROGRAMS= gparray.py gpcheckutil.py gpunit unit2
+PROGRAMS= gparray.py gpunit unit2
 
 DATA= __init__.py datetimeutils.py fault_injection.py gp_era.py gpcatalog.py \
 	gphostcache.py gplog.py gpparseopts.py gpresgroup.py gpsubprocess.py \

gpMgmt/bin/gppylib/operations/Makefile

@@ -5,7 +5,7 @@ include $(top_builddir)/src/Makefile.global
 
 PROGRAMS= initstandby.py test_utils_helper.py
 
-DATA= __init__.py buildMirrorSegments.py deletesystem.py gpcheck.py package.py \
+DATA= __init__.py buildMirrorSegments.py deletesystem.py package.py \
 	rebalanceSegments.py reload.py segment_reconfigurer.py startSegments.py \
 	unix.py utils.py
 

gpMgmt/bin/stream/Makefile

@@ -19,7 +19,7 @@ installdirs:
 install: stream installdirs
 	$(INSTALL_PROGRAM) stream$(X) '$(DESTDIR)$(bindir)/lib/stream$(X)'
 	# Symlink bin/lib/stream to bin/stream to maintain backward compatibility
-	if [ ! -f $(DESTDIR)$(bindir)/stream/stream$(X) && ! -L $(DESTDIR)$(bindir)/stream/stream$(X) ]; then \
+	if [[ ! -f $(DESTDIR)$(bindir)/stream/stream$(X) && ! -L $(DESTDIR)$(bindir)/stream/stream$(X) ]]; then \
 		$(LN_S) $(DESTDIR)$(bindir)/lib/stream$(X) $(DESTDIR)$(bindir)/stream/stream$(X); \
 	fi