package/libmdbx: drop useless hash

Commit c099842544248b10f4284a5d47084db8f476fcda ("package/libmdbx:
bump version to 0.11.8") forgot to drop the hash for the previous
0.11.7 version, let's do so now.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit b831f84e1354487e715a15dfe2c1c81bc954c467)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libmdbx/libmdbx.hash

@@ -1,6 +1,5 @@
 # Hashes from: https://libmdbx.dqdkfa.ru/release/SHA256SUMS
 sha256  06011f361481ee7adc2111e48b7b121384294e0b6b8f10c75e7886629297b279  libmdbx-amalgamated-0.11.8.tar.xz
-sha256  3a9fb6a4cd941e646597235518714373fda1ca6d4c5e23669afe70ea87c20940  libmdbx-amalgamated-0.11.7.tar.xz
 
 # Locally calculated
 sha256  310fe25c858a9515fc8c8d7d1f24a67c9496f84a91e0a0e41ea9975b1371e569  LICENSE