Increase Metrics/BlockLength limit instead of disabling the cop for the block in install_args

Library/Homebrew/.rubocop.yml

@@ -16,7 +16,7 @@ Lint/NestedMethodDefinition:
 Metrics/AbcSize:
   Max: 280
 Metrics/BlockLength:
-  Max: 103
+  Max: 106
   Exclude:
     # TODO: extract more of the bottling logic
     - "dev-cmd/bottle.rb"

Library/Homebrew/cmd/install.rb

@@ -22,7 +22,6 @@ module Homebrew
 
   sig { returns(CLI::Parser) }
   def install_args
-    # rubocop:disable Metrics/BlockLength
     Homebrew::CLI::Parser.new do
       description <<~EOS
         Install a <formula> or <cask>. Additional options specific to a <formula> may be
@@ -136,7 +135,6 @@ module Homebrew
 
       named_args [:formula, :cask], min: 1
     end
-    # rubocop:enable Metrics/BlockLength
   end
 
   def install