Remove go cover and remove unncessary Makefiles

Makefile

@@ -12,7 +12,6 @@ checkgopath:
 
 getdeps: checkdeps checkgopath
 	@go get github.com/tools/godep && echo "Installed godep"
-	@go get golang.org/x/tools/cmd/cover && echo "Installed gocover"
 
 build-all: getdeps
 	@echo "Building Libraries"

devscripts/setup_development_environment.sh

@@ -176,8 +176,9 @@ install_minio_deps() {
     msg "Installing minio deps.."
     env go get github.com/tools/godep && echo "Installed godep" || \
         die "Cannot install godep. Abort installation."
-    env go get golang.org/x/tools/cmd/cover && echo "Installed cover" || \
+# not needed anymore, keeping it here for future
-        die "Cannot install cover. Abort installation."
+#    env go get golang.org/x/tools/cmd/cover && echo "Installed cover" || \
+#        die "Cannot install cover. Abort installation."
 }
 
 install_minio() {

pkg/utils/checksum/crc32c/Makefile

@@ -1,11 +0,0 @@
-all: build test
-.PHONY: all
-
-build:
-	@godep go build
-
-test: build
-	@godep go test -race -coverprofile=cover.out
-
-clean:
-	@rm -v cover.out