[dcl.type.elab] Clarify that there is no expected correlation between

using 'class' or 'struct' in a class definition and using the same
keyword in an elaborated-type-specifier.

Author: zygoloid

source/declarations.tex

@@ -1534,9 +1534,7 @@
 used to refer to an enumeration\iref{dcl.enum}, the \tcode{union}
 \grammarterm{class-key} shall be used to refer to a union\iref{class.union},
 and either the \tcode{class} or \tcode{struct}
-\grammarterm{class-key} shall be used to refer to a class\iref{class.pre}
-declared using the \tcode{class} or \tcode{struct}
-\grammarterm{class-key}.
+\grammarterm{class-key} shall be used to refer to a non-union class\iref{class.pre}.
 \begin{example}
 \begin{codeblock}
 enum class E { a, b };