Merge #2588: [Depends] Remove unused cargo-checksum.sh script

ec2d592 [Depends] Remove unused cargo-checksum.sh script (Fuzzbawls)

Pull request description:

  This script became un-necessary with #2280, but the script file and it's
   reference in the Makefile weren't removed.

  Extracted from #2583 as this is a trivial change that is otherwise holding up a follow-up
  linting update and doesn't necessarily need to be included in #2583

ACKs for top commit:
  furszy:
    ACK ec2d592
  random-zebra:
    utACK ec2d592

Tree-SHA512: f2754d4c05fd3274f3b0431a7804f40fc3c45ad21eeedc9e6521068ee5125ba92688131b9723b9cf9a833341d2be0277f8acb0fb9ede77c372c357df4c2780aa

depends/Makefile

@@ -148,7 +148,7 @@ endif
 
 all_packages = $(packages) $(native_packages)
 
-meta_depends = Makefile funcs.mk builders/default.mk hosts/default.mk hosts/$(host_os).mk builders/$(build_os).mk cargo-checksum.sh
+meta_depends = Makefile funcs.mk builders/default.mk hosts/default.mk hosts/$(host_os).mk builders/$(build_os).mk
 
 $(host_arch)_$(host_os)_native_binutils?=$($(host_os)_native_binutils)
 $(host_arch)_$(host_os)_native_toolchain?=$($(host_os)_native_toolchain)