sidecar: boost system no longer provided or required

Problem: boost_system is no longer required (or built into the base image)
Solution: remove it.
Signed-off-by: vsoch <vsoch@users.noreply.github.com>

src/Makefile

@@ -4,8 +4,7 @@ INSTALL_PREFIX ?= /usr
 LIB_PREFIX ?= /usr/lib
 LOCALBIN ?= $(shell pwd)/bin
 COMMONENVVAR=GOOS=$(shell uname -s | tr A-Z a-z)
-#BUILDENVVAR=CGO_CFLAGS="-I${FLUX_SCHED_ROOT}/resource/reapi/bindings/c" CGO_LDFLAGS="-L${INSTALL_PREFIX}/lib -L${FLUX_SCHED_ROOT}/resource -lresource -L${FLUX_SCHED_ROOT}/resource/libjobspec -ljobspec_conv -L/${FLUX_SCHED_ROOT}/resource/reapi/bindings -lreapi_cli -lflux-idset -lstdc++ -ljansson -lhwloc -lboost_system -lflux-hostlist -lboost_graph -lyaml-cpp"
-BUILDENVVAR=CGO_CFLAGS="-I${FLUX_SCHED_ROOT} -I${FLUX_SCHED_ROOT}/resource/reapi/bindings/c" CGO_LDFLAGS="-L${LIB_PREFIX} -L${LIB_PREFIX}/flux -L${FLUX_SCHED_ROOT}/resource/reapi/bindings -lreapi_cli -lflux-idset -lstdc++ -ljansson -lhwloc -lboost_system -lflux-hostlist -lboost_graph -lyaml-cpp"
+BUILDENVVAR=CGO_CFLAGS="-I${FLUX_SCHED_ROOT} -I${FLUX_SCHED_ROOT}/resource/reapi/bindings/c" CGO_LDFLAGS="-L${LIB_PREFIX} -L${LIB_PREFIX}/flux -L${FLUX_SCHED_ROOT}/resource/reapi/bindings -lreapi_cli -lflux-idset -lstdc++ -ljansson -lhwloc -lflux-hostlist -lboost_graph -lyaml-cpp"
 
 
 LOCAL_REGISTRY=localhost:5000