Revert "netd: IPv6 Tethering Support"

This reverts commit b7fbaa1a0873a0d031c3c6095b41af95059a13a2.
Revert "netd: Add enhanced routing support"

This reverts commit a3aa2fbfcd3e15cafc5748244a4d102301cd8dbf.
Revert "netd: IPv6 Tethering Support"

This reverts commit 61fd59595d3712de7c1afa5cb3df0faa3340b547.
Revert "netd: Change QualcommSoftapCmd to add AR6004 support"

This reverts commit a3d44e9651de98b9f3e24f77986f72f2031f1d36.
Revert "netd: Support the Qualcomm SoftAP SDK."

This reverts commit 70d5f40b3d54e1caeb1770d61c67add920784eea.