Drop old enum syntax. Comma / semicolon are now a syntactic part of enum entry.

Comma must present now between enum entries, semicolon between last entry & first member, constructor calls must be without colons / specifiers.
A swarm of tests fixed accordingly.

compiler/testData/psi/EnumMissingName.txt

@@ -47,7 +47,7 @@ JetFile: EnumMissingName.kt
                 INTEGER_CONSTANT
                   PsiElement(INTEGER_LITERAL)('0xFF000')
               PsiElement(RPAR)(')')
-      PsiElement(COMMA)(',')
+        PsiElement(COMMA)(',')
       PsiWhiteSpace('\n    ')
       ENUM_ENTRY
         OBJECT_DECLARATION_NAME
@@ -65,7 +65,7 @@ JetFile: EnumMissingName.kt
                 INTEGER_CONSTANT
                   PsiElement(INTEGER_LITERAL)('0x00FF00')
               PsiElement(RPAR)(')')
-      PsiElement(COMMA)(',')
+        PsiElement(COMMA)(',')
       PsiWhiteSpace('\n    ')
       ENUM_ENTRY
         OBJECT_DECLARATION_NAME