Change version to 2.0.4 and make single clean target

Makefile

@@ -4,7 +4,7 @@ COMMIT_HASH = `git rev-parse --short HEAD 2>/dev/null`
 BUILD_DATE = `date +%FT%T%Z`
 DEFAULT_TCP_SERVER = sdk.containerum.io:3000
 DEFAULT_HTTP_SERVER = http://sdk.containerum.io:3333
-VERSION = 2.0.3
+VERSION = 2.0.4
 REQLDFLAGS = -X ${PACKAGE}/chlib.CommitHash=${COMMIT_HASH} \
 	-X ${PACKAGE}/chlib.BuildDate=${BUILD_DATE} \
 	-X ${PACKAGE}/chlib/dbconfig.DefaultTCPServer=${DEFAULT_TCP_SERVER} \
@@ -48,13 +48,8 @@ ${BUILDDIR}/${BINARY}: ${SOURCES}
 all: ${BUILDDIR}/${BINARY}
 
 clean:
-	@if [ -f ${BUILDDIR}/${BINARY} ]; then rm ${BUILDDIR}/${BINARY}; fi
-
-clean-build:
 	@rm -rf ${BUILDDIR}
 
-clean-all: clean clean-build
-
 test:
 	@go test