test: unlock more tests

Tests/TokenizerTests/HTML5LibTests.swift

@@ -36,24 +36,6 @@ private let testCases = try! [
 
 @Test("html5lib-tests", arguments: testCases)
 func html5libTests(_ testCase: TestCase) throws {
-    // TODO: Do not ignore any test cases
-    switch testCase.title {
-    // test1.test
-    case "Entity with trailing semicolon (1)": return
-    case "Entity with trailing semicolon (2)": return
-    case "Entity without trailing semicolon (1)": return
-    case "Entity without trailing semicolon (2)": return
-    case "Entity in attribute without semicolon": return
-    // test2.test
-    case "Entity + newline": return
-    // entities.test
-    case "Undefined named entity in a double-quoted attribute value ending in semicolon and whose name starts with a known entity name.": return
-    case "Undefined named entity in a single-quoted attribute value ending in semicolon and whose name starts with a known entity name.": return
-    case "Undefined named entity in an unquoted attribute value ending in semicolon and whose name starts with a known entity name.": return
-    case "Semicolonless named entity 'not' followed by 'i;' in body": return
-    case _: break
-    }
-
     var tokenizer = Tokenizer(sink: TestSink())
     tokenizer.state = testCase.initialState
     var input = Deque(testCase.input)