Remove style guide for "Curve-expression", and update in document

chapters/annotations.tex

@@ -191,7 +191,7 @@ \subsubsection{Plot Curves}\label{plot-curves}
 
 The mandatory \lstinline!x! and \lstinline!y! expressions are restricted to be component references referring to a scalar variable or \lstinline!time!.
 It is an error if \lstinline!x! or \lstinline!y! does not designate a scalar variable.
-When the \lstinline!unit! of an \lstinline!Axis! is non-empty, it is an error if the unit of the corresponding \lstinline!Curve! expression (i.e., a variable's \lstinline!unit!, or second for \lstinline!time!) is incompatible with the axis unit.
+When the \lstinline!unit! of an \lstinline!Axis! is non-empty, it is an error if the unit of the corresponding \lstinline!x! or \lstinline!y! expression (i.e., a variable's \lstinline!unit!, or second for \lstinline!time!) is incompatible with the axis unit.
 
 When \lstinline!legend! isn't provided, the tool produces a default based on \lstinline!x! and/or \lstinline!y!.
 Providing the empty string as \lstinline!legend! means that the curve shall be omitted from the plot legend.

styleguide.md

@@ -96,7 +96,6 @@ Different constructs with _expression_ and _call_:
 Appearance | LaTeX source | Comment
 --- | --- | ---
 `if`-expression | `\lstinline!if!-expression` | Generic language concept
-`Curve`-expression | `\lstinline!Curve!-expression` | Currently with space in the document!
 `Real` expression | `\lstinline!Real! expression` | An expression of type `Real`
 `y` expression | `\lstinline!y! expression` | Expression for something named `y`
 `convertElement` call | `\lstinline!convertElement! call` | A call expression with callee `convertElement`