Remove redundant test name suffixes

From `StrictKeywordArgumentMatchingTest`. The fact that the test class
name includes the words "strict keyword argument matching" makes these
suffixes redundant.

These should probably have been removed in this commit [1] in #730.

[1]: eb84bcd

test/acceptance/strict_keyword_argument_matching_test.rb

@@ -18,7 +18,7 @@ def teardown
       teardown_acceptance_test
     end
 
-    def test_should_not_match_hash_parameter_with_keyword_args_when_strict_keyword_matching_is_enabled
+    def test_should_not_match_hash_parameter_with_keyword_args
       test_result = run_as_test do
         mock = mock()
         mock.expects(:method).with(key: 42)
@@ -27,7 +27,7 @@ def test_should_not_match_hash_parameter_with_keyword_args_when_strict_keyword_m
       assert_failed(test_result)
     end
 
-    def test_should_not_match_hash_parameter_with_splatted_keyword_args_when_strict_keyword_matching_is_enabled
+    def test_should_not_match_hash_parameter_with_splatted_keyword_args
       test_result = run_as_test do
         mock = mock()
         kwargs = { key: 42 }
@@ -37,7 +37,7 @@ def test_should_not_match_hash_parameter_with_splatted_keyword_args_when_strict_
       assert_failed(test_result)
     end
 
-    def test_should_not_match_positional_and_keyword_args_with_last_positional_hash_when_strict_keyword_args_is_enabled
+    def test_should_not_match_positional_and_keyword_args_with_last_positional_hash
       test_result = run_as_test do
         mock = mock()
         mock.expects(:method).with(1, { key: 42 })
@@ -46,7 +46,7 @@ def test_should_not_match_positional_and_keyword_args_with_last_positional_hash_
       assert_failed(test_result)
     end
 
-    def test_should_not_match_last_positional_hash_with_keyword_args_when_strict_keyword_args_is_enabled
+    def test_should_not_match_last_positional_hash_with_keyword_args
       test_result = run_as_test do
         mock = mock()
         mock.expects(:method).with(1, key: 42)