of/unittest: Remove obsolete code
of/unittest: Remove obsolete code

Commit 3ce04b4a9, "Removes OF_UNITTEST dependency on OF_DYNAMIC config
symbol" removes a bunch of code, but missed a few minor bits. Clean it
up by removing the node removal cache and flag.

Signed-off-by: Grant Likely <9069e6f5a2b566e2674a0ba1e2bf39c12c195fad@linaro.org>
Cc: Gaurav Minocha <9da2f0807486f0eaf4a3eaf607eb09fc7dde2113@gmail.com>
Cc: Rob Herring <fbb37eacae100e13076d5c4b46f06cfa4d6fa9f8@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs