Revert "fs/dache.c / mm/page-writeback.c: allow modification of dirty_-values and cache_pressure despite the dynamic suspend/resume values"

This reverts commit a316be1c018f68121c690602a31e65a49864fcd3.
Revert "fs/dcache.c: adaptive vfs_cache_pressure on suspend / resume"

This reverts commit d59a40058387ba213a2675c6c8196edf6d1e7d71.