Merge bitcoin#30653: guix: Drop unused module from manifest

c7fb80a guix: Drop unused module from manifest (Hennadii Stepanov)

Pull request description:

  My Guix build:
  ```
  x86_64
  170df52c2238510bd166f3fb1c4c3c11d2c1480a2e468fd532cb4d0435ac11cf  guix-build-c7fb80a08f98/output/aarch64-linux-gnu/SHA256SUMS.part
  54e71ef5135464f58e3db4a3b893fa2f26a2c9cfb465699a363bb59a0d1bd94f  guix-build-c7fb80a08f98/output/aarch64-linux-gnu/bitcoin-c7fb80a08f98-aarch64-linux-gnu-debug.tar.gz
  806d6042151e0af026748379b9bbbfea53d4c91555b2f0d05ed11faf83f429bb  guix-build-c7fb80a08f98/output/aarch64-linux-gnu/bitcoin-c7fb80a08f98-aarch64-linux-gnu.tar.gz
  96f111f81311b55c805f1ebe74c5a5bc3160819e8fc6d14aab778e6a20a5c266  guix-build-c7fb80a08f98/output/arm-linux-gnueabihf/SHA256SUMS.part
  231a29a9ffec9cc88260324da28d8443a6fd455ff0b010574af455034581aea3  guix-build-c7fb80a08f98/output/arm-linux-gnueabihf/bitcoin-c7fb80a08f98-arm-linux-gnueabihf-debug.tar.gz
  a545801e94e2a7a9859f0111be8762a2a7e5ea4636eed86ac95d17f2f4cdb37a  guix-build-c7fb80a08f98/output/arm-linux-gnueabihf/bitcoin-c7fb80a08f98-arm-linux-gnueabihf.tar.gz
  f565c1c7c10cc5c36f2206c3c5aab54422f20e38185c43f4dbd91c12cb33d10d  guix-build-c7fb80a08f98/output/arm64-apple-darwin/SHA256SUMS.part
  0b0d3d7e7300984063109f2ea23fabdf3961fa337ff28ed602a22965cdf6b499  guix-build-c7fb80a08f98/output/arm64-apple-darwin/bitcoin-c7fb80a08f98-arm64-apple-darwin-unsigned.tar.gz
  78cfb54230e3b054c4bb121925844720be52269db6a63161eeebe93ebfb2dc21  guix-build-c7fb80a08f98/output/arm64-apple-darwin/bitcoin-c7fb80a08f98-arm64-apple-darwin-unsigned.zip
  95124a8019053cc296187c0332e3b5b3acef401298baadacf52713068764dd99  guix-build-c7fb80a08f98/output/arm64-apple-darwin/bitcoin-c7fb80a08f98-arm64-apple-darwin.tar.gz
  a8b36c808c7b57cb2a20e43af36749c07f14392b9816752b68a986f9124806fc  guix-build-c7fb80a08f98/output/dist-archive/bitcoin-c7fb80a08f98.tar.gz
  f7221bc6ed56b5af1196f67c776bd80de9f2b9dc8bf84b0a8602a586fda43079  guix-build-c7fb80a08f98/output/powerpc64-linux-gnu/SHA256SUMS.part
  e04410e453a9fcefacdbe9a1a43ad1f9ec6a36d622d258ea4208af1dc461692d  guix-build-c7fb80a08f98/output/powerpc64-linux-gnu/bitcoin-c7fb80a08f98-powerpc64-linux-gnu-debug.tar.gz
  64135391e147c7357b17b72b1e54e93a9a7931f90c4d14a2066f1c9a160881a0  guix-build-c7fb80a08f98/output/powerpc64-linux-gnu/bitcoin-c7fb80a08f98-powerpc64-linux-gnu.tar.gz
  3f2375042bc29a7f87cadc6ba3ce7389fa5e6f6c53b32836c7fc249e4ba9838e  guix-build-c7fb80a08f98/output/riscv64-linux-gnu/SHA256SUMS.part
  33b8396ab0e1fd3121a85f1a80d81d52fe9be151f401f08283f9d5b8ecbd251b  guix-build-c7fb80a08f98/output/riscv64-linux-gnu/bitcoin-c7fb80a08f98-riscv64-linux-gnu-debug.tar.gz
  418a264d0bcde9665d5760061284ca3b5533c9f63769a76bc64c69d8b3c7d82f  guix-build-c7fb80a08f98/output/riscv64-linux-gnu/bitcoin-c7fb80a08f98-riscv64-linux-gnu.tar.gz
  3fed3e2d050059694da965e1752468c3d054f1acf5b774242eb8e7a73a775af5  guix-build-c7fb80a08f98/output/x86_64-apple-darwin/SHA256SUMS.part
  a5d2ddf1c1bbc22d104ef08d0bd73f8d9c5c8404791df66d51ffc76a0c638fb2  guix-build-c7fb80a08f98/output/x86_64-apple-darwin/bitcoin-c7fb80a08f98-x86_64-apple-darwin-unsigned.tar.gz
  bc3a44ca40c5bad631b76c240a7f1f46d0597cbf0c2389473d856e29775b3f1a  guix-build-c7fb80a08f98/output/x86_64-apple-darwin/bitcoin-c7fb80a08f98-x86_64-apple-darwin-unsigned.zip
  5b2f0aaf4c023cda33fe952f18a977cc735c5e1524b45e734f99641ee605cc5d  guix-build-c7fb80a08f98/output/x86_64-apple-darwin/bitcoin-c7fb80a08f98-x86_64-apple-darwin.tar.gz
  e56223d773f7d1a0a0dbe99d98e60420f729987f14fb98f18eabe6575352f68c  guix-build-c7fb80a08f98/output/x86_64-linux-gnu/SHA256SUMS.part
  6e4a27fcafb1ec2dda41c7e486897ff51a4447d0ebfa6be30bdef6648c673786  guix-build-c7fb80a08f98/output/x86_64-linux-gnu/bitcoin-c7fb80a08f98-x86_64-linux-gnu-debug.tar.gz
  3ff4232266a461bb55518a1e8834867e7e79c02914c59eb8f6b5052a26aefc12  guix-build-c7fb80a08f98/output/x86_64-linux-gnu/bitcoin-c7fb80a08f98-x86_64-linux-gnu.tar.gz
  fd2cfb0befaf849e98574698ddab121a01c7894bb5acc789b9eb9c3bbe78e7b2  guix-build-c7fb80a08f98/output/x86_64-w64-mingw32/SHA256SUMS.part
  58a2f67ecc94b2daad37ab99e74708c062094eb047136e57451d89f856d0c9aa  guix-build-c7fb80a08f98/output/x86_64-w64-mingw32/bitcoin-c7fb80a08f98-win64-debug.zip
  6ccf68edc22dab4cc3171f3d8cdaed0444c438bca812512586edd81029de2c57  guix-build-c7fb80a08f98/output/x86_64-w64-mingw32/bitcoin-c7fb80a08f98-win64-setup-unsigned.exe
  d466b5bc2ace63995ca22943997db7c292e240cdee7c63e127ecd380a1ca9558  guix-build-c7fb80a08f98/output/x86_64-w64-mingw32/bitcoin-c7fb80a08f98-win64-unsigned.tar.gz
  b3fd8af55443feb8667940a18fb511e6d85ece1dd9fa0aa40f68e5ea86ab46df  guix-build-c7fb80a08f98/output/x86_64-w64-mingw32/bitcoin-c7fb80a08f98-win64.zip
  ```

ACKs for top commit:
  fanquake:
    ACK c7fb80a - looks like this was last used in bitcoin#27179.

Tree-SHA512: 40498cb514a31609e721b3865a99b91e4ff2bf5760750a42b5b16333d905d13cf2f87481aabc679c08b9e872a6886a7c928706b6d7ada08df02672d4b5156ba1

contrib/guix/manifest.scm

@@ -22,7 +22,6 @@
              ((gnu packages tls) #:select (openssl))
              ((gnu packages version-control) #:select (git-minimal))
              (guix build-system cmake)
-             (guix build-system gnu)
              (guix build-system python)
              (guix build-system trivial)
              (guix download)