Revert "lxc: set DEBUG_PREFIX_MAP in TARGET_LDFLAGS for reproducibility" (qualcomm-linux#154)

This reverts commit 8041767.

Fix now available via meta-virtualization [1].

[1]

https://git.yoctoproject.org/meta-virtualization/commit/?id=4ed680e32e3670a4e50038387572ee7a35374c0e

Author: lumag