Remove hack/tree_status.sh

The sole reason of having this was to produce a nice informative error
message in case of failure (and because the message was not explicitly
specified, it was entirely wrong in 1 of 2 use cases).

Let's drop it and just use git to fail the job if a tree is dirty.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.cirrus.yml

@@ -87,7 +87,7 @@ config_task:
         - dnf install -y make glib2-devel git gcc golang
         - cd $CIRRUS_WORKING_DIR
         - make config
-        - ./hack/tree_status.sh
+        - git diff --exit-code
 
 
 # Verify code was fmt'ed properly
@@ -102,7 +102,7 @@ fmt_task:
         - dnf install -y clang clang-tools-extra golang
         - cd $CIRRUS_WORKING_DIR
         - make fmt
-        - ./hack/tree_status.sh
+        - git diff --exit-code
 
 
 # Build the static binary

hack/tree_status.sh

@@ -1,17 +0,0 @@
-#!/bin/bash
-# this script is based off of the similarly named in github.com/containers/libpod/hack/tree_status.sh
-
-set -e
-
-SUGGESTION="${SUGGESTION:-call 'make config' and commit all changes.}"
-
-STATUS=$(git status --porcelain)
-if [[ -z $STATUS ]]
-then
-	echo "tree is clean"
-else
-	echo "tree is dirty, please $SUGGESTION"
-	echo ""
-	echo "$STATUS"
-	exit 1
-fi