Revert post-reboot story work to allow promotion without it

[#171575554](https://www.pivotaltracker.com/story/show/171575554)

Revert "Add log line to post-reboot script"

This reverts commit 6d318e3.

Co-authored-by: George Gelashvili <ggelashvili+cf@pivotal.io>

Revert "add Stop-Computer to PostReboot step, ignore EOF error"

This reverts commit 87c6b3e.

Co-authored-by: Anand Gaitonde <agaitonde@pivotal.io>

Revert "add retry abort reboot command in reboot checker"

This reverts commit 279541d.

Co-authored-by: George Gelashvili <ggelashvili+cf@pivotal.io>

Revert "Add 24 hour timeout to PostReboot.ps1 execution"

This reverts commit 3b0c984.

Co-authored-by: Anand Gaitonde <agaitonde@pivotal.io>

Revert "Refactor stembuild construct to preserve post-reboot logs"

This reverts commit e373f93.

Co-authored-by: George Gelashvili <ggelashvili+cf@pivotal.io>

Author: XenoPhex

.gitignore

@@ -12,6 +12,4 @@ test/data/expected.vmdk.lck/*
 version/version.go
 version/version
 **.ova
-**/.envrc
-integration/construct/construct-integration*/**
-
+**/.envrc

Makefile

@@ -23,9 +23,6 @@ update :
 integration : generate
 	ginkgo -r -v -randomizeAllSpecs integration
 
-integration/construct : generate
-	ginkgo -r -v -randomizeAllSpecs integration/construct
-
 integration-badger : generate
 	ginkgo -r -v -randomizeAllSpecs -untilItFails integration