Makefile: Drop find-godeps.sh for podman target

We inherited this from a031b83a (Initial checkin from CRI-O repo,
2017-11-01), but:

* The output is actually going into bin/podman, so Make will rebuild
  this target every time.  You'll never be able to save compilation
  because the target is newer than all the prerequisites.

* Make expands prerequisites immediately when loading a Makefile [1],
  and on my wimpy Chromebook SD Card, this is *slow*:

    $ time hack/find-godeps.sh ~/.local/lib/go/src/github.com/projectatomic/libpod cmd/podman github.com/projectatomic/libpod
    ...
    real    0m56.225s
    user    0m44.918s
    sys     0m21.918s

* Go is pretty good at this on its own, so having make call 'go build'
  every time will almost certainly be faster than us trying to mimic
  this in a shell script.  And by punting to Go in the recipe, Make
  invocations that do not need the podman target (e.g. 'make help')
  can skip the dependency lookup entirely.

[1]: https://www.gnu.org/software/make/manual/html_node/Reading-Makefiles.html#Rule-Definition

Signed-off-by: W. Trevor King <wking@tremily.us>

Closes: #776
Approved by: rhatdan

Makefile

@@ -87,7 +87,7 @@ test/copyimg/copyimg: .gopathok $(wildcard test/copyimg/*.go)
 test/checkseccomp/checkseccomp: .gopathok $(wildcard test/checkseccomp/*.go)
 	$(GO) build $(LDFLAGS) -tags "$(BUILDTAGS) containers_image_ostree_stub" -o $@ $(PROJECT)/test/checkseccomp
 
-podman: .gopathok $(shell hack/find-godeps.sh $(GOPKGDIR) cmd/podman $(PROJECT)) varlink_generate varlink_api_generate
+podman: .gopathok API.md cmd/podman/varlink/ioprojectatomicpodman.go
 	$(GO) build -i $(LDFLAGS_PODMAN) -tags "$(BUILDTAGS)" -o bin/$@ $(PROJECT)/cmd/podman
 
 python-podman:

hack/find-godeps.sh

@@ -1,41 +0,0 @@
-#!/bin/bash
-#
-# $1 - base path of the source tree
-# $2 - subpath under $1 to find *.go dependencies for
-# $3 - package name (eg, github.com/organization/project)
-
-set -o errexit
-set -o nounset
-set -o pipefail
-
-# might be called from makefile before basepath is set up; just return
-# empty deps.  The make target will then ensure that GOPATH is set up
-# correctly, and go build will build everything the first time around
-# anyway.  Next time we get here everything will be fine.
-if [ ! -d "$1/$2" ]; then
-	exit 0
-fi
-
-function find-deps() {
-	local basepath=$1
-	local srcdir=$2
-	local pkgname=$3
-	local deps=
-
-	# gather imports from cri-o
-	pkgs=$(cd ${basepath}/${srcdir} && go list -f "{{.Imports}}" . | tr ' ' '\n' | tr -d '[]' | grep -v "/vendor/" | grep ${pkgname} | sed -e "s|${pkgname}/||g")
-
-	# add each Go import's sources to the deps list,
-	# and recursively get that imports's imports too
-	for dep in ${pkgs}; do
-		deps+="$(ls ${basepath}/${dep}/*.go | sed -e "s|${basepath}/||g") "
-		# add deps of this package too
-		deps+="$(find-deps ${basepath} ${dep} ${pkgname}) "
-	done
-
-	echo "${deps}" | sort | uniq
-}
-
-# add Go sources from the current package at the end
-echo "$(find-deps "$1" "$2" "$3" | xargs) $(cd $1 && ls $2/*.go | xargs)"
-