Revert "FIX: workaround missing musl resolution find non musl gem and then lean on glibc that was installed via glibc gem"

This reverts commit d0bf9ee.

Author: SamSaffron

ext/mini_racer_extension/extconf.rb

@@ -11,35 +11,6 @@
 gem 'libv8-node', MiniRacer::LIBV8_NODE_VERSION
 require 'libv8-node'
 
-# Fix for missing aarch64-linux-musl gem in libv8-node
-# On some platforms (like ARM64 Alpine), the musl-specific gem might be missing.
-# We fallback to the glibc gem's directory if the musl one isn't found.
-if RUBY_PLATFORM.include?('musl')
-  module Libv8::Node::Paths
-    def self.platform
-      @platform ||= begin
-        # Replicate libv8-node's platform detection logic without side effects
-        detected_platform = Gem::Platform.local.dup
-        if detected_platform.version.nil?
-          detected_platform.instance_eval { @version = 'musl' }
-        end
-
-        platform_name = detected_platform.to_s.gsub(/-darwin-?\d+/, '-darwin')
-
-        # If the musl-specific directory is missing, try falling back to glibc
-        unless File.exist?(File.join(vendored_source_path, platform_name))
-          fallback = platform_name.gsub('-musl', '')
-          if File.exist?(File.join(vendored_source_path, fallback))
-            platform_name = fallback
-          end
-        end
-
-        platform_name
-      end
-    end
-  end
-end
-
 IS_DARWIN = RUBY_PLATFORM =~ /darwin/
 
 have_library('pthread')