shadowsocks-libev: drop the useless hash

In commit f8d44394777fb9b45befaee3333d974dfe5e745d
("shadowsocks-libev: new package"), when this package was introduced,
the hash for a license file that isn't available in upstream's tarball
was added to the license file. Obviously, this hash serves no purpose,
so drop it.

Signed-off-by: Min Xu <xuminready@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/shadowsocks-libev/shadowsocks-libev.hash

@@ -5,4 +5,3 @@ sha256 5521cf623a07fd1e393528516a83acd2b66c5d4bb4535a52662806a6a060c606 shadowso
 sha256 736883f97d44dbec288bb82819f18f4f86d02ae3192f6a9abefa00db76bace41  COPYING
 sha256 c41a4bc2c4c43e4daa3051e77e31b2d5c8500498afaeac6d831d55a4bb8de3fb  libbloom/LICENSE
 sha256 4fa2ada54f8c0410ec243265378242ffe862386d5ac517f8dd30a1911d25ae93  libcork/COPYING
-sha256 4b3adc9ce620fa868f1dda328203dbccbd3e9f5fbafb49c581edc386a504ee1a  libipset/LICENSE.txt