remove old release signatures

the signatures for the next release will be in the release note itself

README.md

@@ -20,7 +20,6 @@ XMR-Stak is a universal Stratum pool miner. This miner supports CPUs, AMD and NV
 * [HowTo Compile](doc/compile.md)
 * [FAQ](doc/FAQ.md)
 * [Developer Donation](#default-developer-donation)
-* [Release Cheksums](#release-checksums)
 * [Developer PGP Key's](doc/pgp_keys.md)
 
 ## Features
@@ -75,45 +74,3 @@ psychocrypt:
 ```
 45tcqnJMgd3VqeTznNotiNj4G9PQoK67TGRiHyj6EYSZ31NUbAfs9XdiU5squmZb717iHJLxZv3KfEw8jCYGL5wa19yrVCn
 ```
-
-## Release Checksums
-
-Please use the [Developer PGP Key's](doc/pgp_keys.md) to verify the integrity of the precompiled binaries.
-
-```
------BEGIN PGP SIGNED MESSAGE-----
-Hash: SHA256
-
-XMR-Stak 2.2.0 Windows Build Checksums
-
-compiled by: psychocrypt
-
-$ sha1sum *
-3f1634244ccd336f7df581e3c82e1c6ca38ce714  libeay32.dll
-538f3bd9dfcafc379e912562bcf343333f5375c7  ssleay32.dll
-302e5be7c97fcd4922bf99b3533c0523ead5d109  xmrstak_cuda_backend.dll
-ad6b9e62a7ea132e1bec0efd8d9e5f8a2ae531ca  xmr-stak.exe
-393bc5deb7e59e61cc7f4ccc0f4438402422f3b0  xmrstak_opencl_backend.dll
-
-$ sha3sum *
-5aeefca7278be1b2706d99bf89fa23646931f881aff8bbca33654eb1  libeay32.dll
-6b696caa620b0c6372881b11e503313152b5191c2d5497b26f81ab79  ssleay32.dll
-038de57a707664c7c3ab3a74c8bdb3ed4e22000a74d8b7c359c7c4b5  xmrstak_cuda_backend.dll
-19ab61049051178a362dc0d1c17af06f5ca1eb0a75182c0388e5aa22  xmr-stak.exe
-cc7ba0fbde50d72df2a530ce52a831578cfa19999841eb954554a022  xmrstak_opencl_backend.dll
-
-date
-Fri Dec 22 22:09:59 CET 2017
-
------BEGIN PGP SIGNATURE-----
-Version: GnuPG v2
-
-iQEcBAEBCAAGBQJaPXYSAAoJEAUWOMCIZelDQpAH/As2BD6qDZvbKH5NPHjjDv6T
-KBJ6/0h+x2k4Iy3GelrtaogB4LvUDzci4MRfaTXr23Xr+rhwsx3J2xvVdWKZgPXh
-bQm5pTJFhiao6Dh+Orway6TLmuaEBLNtknatSkjPUPKmkVd/A7kxxkdelDB//yb+
-7k5HGb84T+HU8HBlB00pDITyXv/414egpZGMqWeBXsYDeEYa8KHZlEIO3YI4JrEz
-pNW44Q1YcWZ+zxqTDrvMgjW8KJZcXg6ijJ3fEhGBo+hcnF+WuUB3Yd3Frf0ps5J5
-MjnWXl/uOobML6K70g2UQcHcEDbPk8f9LUxX1++/I0aHsRMGMYhRj0ad5KYE1IY=
-=VCEv
------END PGP SIGNATURE-----
-```