tool/rdoc-srcdir: drop redundant require 'rbs'

st0012 · st0012 · commit 0d13ef2e0768 · 2026-05-15T00:16:09.000+08:00
`require 'rdoc/rdoc'` on the preceding line triggers RubyGems activation of rdoc's runtime dependencies, which now includes `rbs (>= 4.0.0)`. The explicit `require 'rbs'` added in 2748759 is no longer needed.
diff --git a/tool/rdoc-srcdir b/tool/rdoc-srcdir
@@ -2,7 +2,6 @@
 
 require 'rubygems'
 require 'rdoc/rdoc'
-require 'rbs'
 
 # Make only the output directory relative to the invoked directory.
 invoked = Dir.pwd
