Revert "Makefile: Add dumpRSAPublicKey to SDK utilities"

This reverts commit cd78ae54a2f7ccec9ef0216b633d1b4626d14af0.

Reason for revert: broke snapshot builders

BUG=chromium:1108724
TEST=None

Original change's description:
> Makefile: Add dumpRSAPublicKey to SDK utilities
> 
> This utility is used in key generation, so it really belongs in the SDK.
> However, some autotests currently also want to generate keys on the DUT.
> So let's just install it to both.
> 
> BRANCH=none
> BUG=none
> TEST=sudo emerge
> 
> Signed-off-by: Julius Werner <jwerner@chromium.org>
> Change-Id: I8b69b284d2a1c15f1fb17e1bb7be43a6215cd42d
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2298661
> Reviewed-by: Joel Kitching <kitching@chromium.org>

Bug: none
Change-Id: Ia868c8c5f4a7269e25ef38a51157bbd90ac24064
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2315562
Reviewed-by: Wu-Cheng Li <wuchengli@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: Wu-Cheng Li <wuchengli@chromium.org>
Commit-Queue: Julius Werner <jwerner@chromium.org>
diff --git a/Makefile b/Makefile
index 543d555..e025907 100644
--- a/Makefile
+++ b/Makefile
@@ -582,7 +582,6 @@
 	utility/tpm-nvsize
 
 UTIL_NAMES_SDK = \
-	utility/dumpRSAPublicKey \
 	utility/load_kernel_test \
 	utility/pad_digest_utility \
 	utility/signature_digest_utility \