Revert "ANDROID: GKI: net: add vendor hooks for 'struct sock' lifecycle"

This reverts commit 79e2fce9.

The hooks added here were never used at all.

If these hooks are needed by any real user, it can easily be reverted to
add it back and then the symbol should be added to the abi list at the
same time to prevent it from being removed again later.

Bug: 203756332
Bug: 171013716
Cc: Aditya Agrawal <aditya.a1@samsung.com>
Change-Id: I38b0c23c95b31096ac3a2e314e5614eea2dc416c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>