Remove most of the obsolete specs

spec/ameba/rule/performance/any_after_filter_spec.cr

@@ -66,14 +66,5 @@ module Ameba::Rule::Performance
         expect_no_corrections source
       end
     end
-
-    it "reports rule, pos and message" do
-      source = expect_issue subject, <<-CRYSTAL
-        [1, 2, 3].reject { |e| e > 2 }.any?
-                # ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: Use `any? {...}` instead of `reject {...}.any?`
-        CRYSTAL
-
-      expect_no_corrections source
-    end
   end
 end

spec/ameba/rule/performance/any_instead_of_empty_spec.cr

@@ -42,18 +42,5 @@ module Ameba::Rule::Performance
           CRYSTAL
       end
     end
-
-    it "reports rule, pos and message" do
-      source = Source.new path: "source.cr", code: %(
-        [1, 2, 3].any?
-      )
-      subject.catch(source).should_not be_valid
-      issue = source.issues.first
-
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:1:11"
-      issue.end_location.to_s.should eq "source.cr:1:14"
-      issue.message.should eq "Use `!{...}.empty?` instead of `{...}.any?`"
-    end
   end
 end

spec/ameba/rule/performance/chained_call_with_no_bang_spec.cr

@@ -54,22 +54,6 @@ module Ameba::Rule::Performance
       end
     end
 
-    it "reports rule, pos and message" do
-      source = Source.new path: "source.cr", code: <<-CODE
-        [1, 2, 3].select { |e| e > 1 }.reverse
-        CODE
-
-      subject.catch(source).should_not be_valid
-      source.issues.size.should eq 1
-
-      issue = source.issues.first
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:1:32"
-      issue.end_location.to_s.should eq "source.cr:1:38"
-
-      issue.message.should eq "Use bang method variant `reverse!` after chained `select` call"
-    end
-
     context "macro" do
       it "doesn't report in macro scope" do
         expect_no_issues subject, <<-CRYSTAL

spec/ameba/rule/performance/compact_after_map_spec.cr

@@ -36,18 +36,5 @@ module Ameba::Rule::Performance
           CRYSTAL
       end
     end
-
-    it "reports rule, pos and message" do
-      s = Source.new %(
-        (1..3).map(&.itself).compact
-      ), "source.cr"
-      subject.catch(s).should_not be_valid
-      issue = s.issues.first
-
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:1:8"
-      issue.end_location.to_s.should eq "source.cr:1:29"
-      issue.message.should eq "Use `compact_map {...}` instead of `map {...}.compact`"
-    end
   end
 end

spec/ameba/rule/performance/first_last_after_filter_spec.cr

@@ -72,21 +72,6 @@ module Ameba::Rule::Performance
       end
     end
 
-    it "reports rule, pos and message" do
-      s = Source.new %(
-        [1, 2, 3].select { |e| e > 2 }.first
-      ), "source.cr"
-      subject.catch(s).should_not be_valid
-      s.issues.size.should eq 1
-
-      issue = s.issues.first
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:1:11"
-      issue.end_location.to_s.should eq "source.cr:1:37"
-
-      issue.message.should eq "Use `find {...}` instead of `select {...}.first`"
-    end
-
     context "macro" do
       it "doesn't report in macro scope" do
         expect_no_issues subject, <<-CRYSTAL

spec/ameba/rule/performance/flatten_after_map_spec.cr

@@ -30,18 +30,5 @@ module Ameba::Rule::Performance
           CRYSTAL
       end
     end
-
-    it "reports rule, pos and message" do
-      s = Source.new %(
-        %w[Alice Bob].map(&.chars).flatten
-      ), "source.cr"
-      subject.catch(s).should_not be_valid
-      issue = s.issues.first
-
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:1:15"
-      issue.end_location.to_s.should eq "source.cr:1:35"
-      issue.message.should eq "Use `flat_map {...}` instead of `map {...}.flatten`"
-    end
   end
 end

spec/ameba/rule/performance/map_instead_of_block_spec.cr

@@ -45,18 +45,5 @@ module Ameba::Rule::Performance
           CRYSTAL
       end
     end
-
-    it "reports rule, pos and message" do
-      s = Source.new %(
-        (1..3).map(&.to_u64).sum
-      ), "source.cr"
-      subject.catch(s).should_not be_valid
-      issue = s.issues.first
-
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:1:8"
-      issue.end_location.to_s.should eq "source.cr:1:25"
-      issue.message.should eq "Use `sum {...}` instead of `map {...}.sum`"
-    end
   end
 end

spec/ameba/rule/performance/size_after_filter_spec.cr

@@ -61,18 +61,5 @@ module Ameba::Rule::Performance
           CRYSTAL
       end
     end
-
-    it "reports rule, pos and message" do
-      s = Source.new %(
-        lines.split("\n").reject(&.empty?).size
-      ), "source.cr"
-      subject.catch(s).should_not be_valid
-      issue = s.issues.first
-
-      issue.rule.should_not be_nil
-      issue.location.to_s.should eq "source.cr:2:4"
-      issue.end_location.to_s.should eq "source.cr:2:25"
-      issue.message.should eq "Use `count {...}` instead of `reject {...}.size`."
-    end
   end
 end