commit 5de83b1e4749c27ffa771f5827907da68bc0633d
author Marti Bolivar <marti@foundries.io> Wed Sep 05 15:00:39 2018 -0400
committer Fabio Utzig <utzig@utzig.org> Wed Sep 05 20:30:01 2018 -0300
tree ab130de02f1cdae6dd1b968d0024c7dd8de0249d
parent 0e259097fb9a9df32502ab6a10748c81568bf13f

zephyr: config-rsa.h: remove copypasta

MCUboot doesn't need mbedTLS's entropy code (you don't need random
numbers to check a digital signature), but it enables it. This causes
really scary warnings when building entropy.c, since the test entropy
source is enabled:

    [113/197] Building C object zephyr/ext/lib/crypto/mbedtls/CMakeFiles/ext__lib__crypto__mbedtls.dir/library/entropy.c.obj
    /home/mbolivar/src/zephyr/ext/lib/crypto/mbedtls/library/entropy.c:31:2: warning: #warning "**** WARNING!  MBEDTLS_TEST_NULL_ENTROPY defined! " [-Wcpp]
     #warning "**** WARNING!  MBEDTLS_TEST_NULL_ENTROPY defined! "
      ^~~~~~~
    /home/mbolivar/src/zephyr/ext/lib/crypto/mbedtls/library/entropy.c:32:2: warning: #warning "**** THIS BUILD HAS NO DEFINED ENTROPY SOURCES " [-Wcpp]
     #warning "**** THIS BUILD HAS NO DEFINED ENTROPY SOURCES "
      ^~~~~~~
    /home/mbolivar/src/zephyr/ext/lib/crypto/mbedtls/library/entropy.c:33:2: warning: #warning "**** THIS BUILD IS *NOT* SUITABLE FOR PRODUCTION USE " [-Wcpp]
     #warning "**** THIS BUILD IS *NOT* SUITABLE FOR PRODUCTION USE "
      ^~~~~~~

Delete the bits of the mbedTLS configuration that compile this
file (along with some testing code we don't care about either) to
clean up the warning. This looks like copy/paste code from the initial
mbedTLS config import into MCUboot.

Signed-off-by: Marti Bolivar <marti@foundries.io>