s*: Fix Homebrew/NoFileutilsRmrf RuboCop offenses

[issyl0]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

---

• Part of rubocop: Discourage the use of rm_f and rm_rf in formulae and casks brew#17705.
• Different approach from the previous massive PR - I'm splitting them up per-alphabet letter (ish) and letting CI do the full "no bottles" build. This is s*.

[issyl0]

subversion:
    Error: An exception occurred within a child process:
    Errno::ENOENT: No such file or directory @ apply2files - /home/linuxbrew/.linuxbrew/Cellar/subversion/1.14.3_1/Library/Perl

share-mime-info:
    ==> An exception occurred within a child process:
    Errno::ENOENT: No such file or directory @ apply2files - /home/linuxbrew/.linuxbrew/Cellar/shared-mime-info/2.4/share/mime

streamripper:
    Error: An exception occurred within a child process:
    TypeError: Parameter 'newflags': Expected type String, got type NilClass
    Caller: /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/s/streamripper.rb:31
    Definition: /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/extend/ENV/shared.rb:70 (SharedEnvExtension#append_to_cflags)