Omitting the date when using \maketitle
If you want a blank date, just use \date{}
.
If you want to remove the spacing altogether where the date usually goes, look into using the titling
package, or else the mechanisms provided by your document class, depending on what it is.
For a cheap and easy solution to removing the spacing without delving into the titling
package that frabjous mentions, try:
\documentclass{article}
\author{Me}
\title{Foo}
\date{\vspace{-5ex}}
%\date{} % Toggle commenting to test
\begin{document}
\maketitle
Bar
\end{document}
@Reid’s titling
solution (mentioned above in a comment, and alluded to in @frabjous’s answer) deserves a full answer, since it does a nice job of removing the space associated with the date:
\documentclass{article}
% remove spacing around date:
\usepackage{titling}
\predate{}
\postdate{}
\author{Author, A.}
\title{Alpha}
\date{} % clear date
\begin{document}
\maketitle
Some text.
\end{document}