Revert "msm: Create shadow files under /sys/kernel/ipv4"

This reverts commit 241d951fe7a958f8761f953eba2f4e8797766b0e.
Revert "WLAN subsystem: Sysctl support for key TCP/IP parameters"

This reverts commit 12915b8f91c625e13f2ac66c8823069e2b0a4892.