guix: Drop unneeded modules

contrib/guix/manifest.scm

@@ -1,12 +1,9 @@
-(use-modules (gnu)
-             (gnu packages)
+(use-modules (gnu packages)
              (gnu packages autotools)
-             (gnu packages base)
              (gnu packages bash)
              (gnu packages bison)
              (gnu packages certs)
              (gnu packages cdrom)
-             (gnu packages check)
              (gnu packages cmake)
              (gnu packages commencement)
              (gnu packages compression)
@@ -14,7 +11,6 @@
              (gnu packages file)
              (gnu packages gawk)
              (gnu packages gcc)
-             (gnu packages gnome)
              (gnu packages installers)
              (gnu packages linux)
              (gnu packages llvm)
@@ -25,7 +21,6 @@
              ((gnu packages python-build) #:select (python-tomli))
              (gnu packages python-crypto)
              (gnu packages python-web)
-             (gnu packages shells)
              (gnu packages tls)
              (gnu packages version-control)
              (guix build-system cmake)
@@ -36,7 +31,6 @@
              (guix git-download)
              ((guix licenses) #:prefix license:)
              (guix packages)
-             (guix profiles)
              (guix utils))
 
 (define-syntax-rule (search-our-patches file-name ...)