Revert "SERVER-29208 Add the $dateFromString aggregation operator"

This reverts commit b8de37d364fcde0ed2c93cdf8f5ed0001663e372.

1 files changed, 0 insertions, 19 deletions

diff --git a/src/mongo/db/pipeline/expression.h b/src/mongo/db/pipeline/expression.h
index c7889305aa0..aad2ced9b55 100644
--- a/src/mongo/db/pipeline/expression.h
+++ b/src/mongo/db/pipeline/expression.h
@@ -828,25 +828,6 @@ private:
     typedef ExpressionFixedArity<ExpressionCond, 3> Base;
 };
 
-class ExpressionDateFromString final : public Expression {
-public:
-    boost::intrusive_ptr<Expression> optimize() final;
-    Value serialize(bool explain) const final;
-    Value evaluate(const Document&) const final;
-    void addDependencies(DepsTracker*) const final;
-
-    static boost::intrusive_ptr<Expression> parse(
-        const boost::intrusive_ptr<ExpressionContext>& expCtx,
-        BSONElement expr,
-        const VariablesParseState& vps);
-
-private:
-    ExpressionDateFromString(const boost::intrusive_ptr<ExpressionContext>& expCtx,
-                             boost::intrusive_ptr<Expression> dateString);
-
-    boost::intrusive_ptr<Expression> _dateString;
-};
-
 class ExpressionDateFromParts final : public Expression {
 public:
     boost::intrusive_ptr<Expression> optimize() final;