Revert "Kconfig: Add menu choice option to reclaim virtual memory"

This reverts commit a2f48e4600da273d6143a4f0e2554e753ce60ef9.

This change enables vmalloc savings feature(CONFIG_ENABLE_VMALLOC_SAVING),
but it conflicts with NAND pagescope operation and causes boot up crash.

Change-Id: Ie36190c9bb936d61cb86e198e556aa2159cf57d9
Signed-off-by: Yongsang Tak <ytak@codeaurora.org>