Revert "freezer: convert freezable helpers to static inline where possible"

This reverts commit 894adda28521b7cc1a578d03ab6589e18e01d580.
Revert "freezer: add unsafe versions of freezable helpers for CIFS"

This reverts commit ae852ad2ddfe51a5b731a5a41954ccf3e4aeea17.
Revert "freezer: add unsafe versions of freezable helpers for NFS"

This reverts commit ca25c63ae28d17e29922c0fe8ccb1b425ac72712.
Revert "af_unix: use freezable blocking calls in read"

This reverts commit cc48f6fb8aee8b1f13a889ae116ebb06fea08798.
Revert "PM: Introduce suspend state PM_SUSPEND_FREEZE"

This reverts commit d1f879fcc8d68d92355e2e817adf048201390793.