Remove 3.1 version as a starting one in version guards

core/method/private_spec.rb

@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "Method#private?" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "returns false when the method is public" do
       obj = MethodSpecs::Methods.new
       obj.method(:my_public_method).private?.should == false

core/method/protected_spec.rb

@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "Method#protected?" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "returns false when the method is public" do
       obj = MethodSpecs::Methods.new
       obj.method(:my_public_method).protected?.should == false

core/method/public_spec.rb

@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "Method#public?" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "returns true when the method is public" do
       obj = MethodSpecs::Methods.new
       obj.method(:my_public_method).public?.should == true

core/refinement/include_spec.rb

@@ -1,7 +1,7 @@
 require_relative '../../spec_helper'
 
 describe "Refinement#include" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "warns about deprecation" do
       Module.new do
         refine String do

core/refinement/prepend_spec.rb

@@ -1,7 +1,7 @@
 require_relative '../../spec_helper'
 
 describe "Refinement#prepend" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "warns about deprecation" do
       Module.new do
         refine String do

core/struct/initialize_spec.rb

@@ -41,7 +41,7 @@
     StructClasses::SubclassX.new(:y).new.key.should == :value
   end
 
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "warns about passing only keyword arguments" do
       -> {
         StructClasses::Ruby.new(version: "3.1", platform: "OS")

core/unboundmethod/private_spec.rb

@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "UnboundMethod#private?" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "returns false when the method is public" do
       obj = UnboundMethodSpecs::Methods.new
       obj.method(:my_public_method).unbind.private?.should == false

core/unboundmethod/protected_spec.rb

@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "UnboundMethod#protected?" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "returns false when the method is public" do
       obj = UnboundMethodSpecs::Methods.new
       obj.method(:my_public_method).unbind.protected?.should == false

core/unboundmethod/public_spec.rb

@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "UnboundMethod#public?" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "returns true when the method is public" do
       obj = UnboundMethodSpecs::Methods.new
       obj.method(:my_public_method).unbind.public?.should == true

library/rbconfig/unicode_emoji_version_spec.rb

@@ -2,7 +2,7 @@
 require 'rbconfig'
 
 describe "RbConfig::CONFIG['UNICODE_EMOJI_VERSION']" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "is 13.1" do
       RbConfig::CONFIG['UNICODE_EMOJI_VERSION'].should == "13.1"
     end

library/rbconfig/unicode_version_spec.rb

@@ -2,7 +2,7 @@
 require 'rbconfig'
 
 describe "RbConfig::CONFIG['UNICODE_VERSION']" do
-  ruby_version_is "3.1"..."3.2" do
+  ruby_version_is ""..."3.2" do
     it "is 13.0.0" do
       RbConfig::CONFIG['UNICODE_VERSION'].should == "13.0.0"
     end