[expr.const] Remove redundant bullet from definition of manifestly

constant-evaluated. Constexpr variables are always usable in constant
expressions.

Author: zygoloid

source/expressions.tex

@@ -6901,7 +6901,6 @@
 \begin{itemize}
 \item a \grammarterm{constant-expression}, or
 \item the condition of a constexpr if statement\iref{stmt.if}, or
-\item the initializer of a constexpr variable\iref{dcl.constexpr}, or
 \item an immediate invocation, or
 \item a \grammarterm{constraint-expression}\iref{temp.constr.decl}
 including one formed from the \grammarterm{constraint-logical-or-expression}