erase unneeded friend declaration (RegExpOptimize)

alib2data/src/regexp/unbounded/UnboundedRegExpAlternation.h

@@ -13,12 +13,6 @@
 namespace regexp {
-namespace simplify {
-
-class RegExpOptimize;
-
-} /* namespace simplify */
-
 /**
  * Represents alternation operator in the regular expression. Contains list of UnboundedRegExpElement
  * as operands of the operator.
@@ -90,8 +84,6 @@ public:
 	 */
 	virtual void operator >>( std::ostream & out ) const;
-	friend class simplify::RegExpOptimize;
-
 	virtual explicit operator std::string ( ) const;
 };

alib2data/src/regexp/unbounded/UnboundedRegExpConcatenation.h

@@ -13,12 +13,6 @@
 namespace regexp {
-namespace simplify {
-
-class RegExpOptimize;
-
-} /* namespace simplify */
-
 /**
  * Represents concatenation operator in the regular expression. Contains list of UnboundedRegExpElement
  * as operands of the operator.
@@ -90,8 +84,6 @@ public:
 	 */
 	virtual void operator >>( std::ostream & out ) const;
-	friend class simplify::RegExpOptimize;
-
 	virtual explicit operator std::string ( ) const;
 };

alib2data/src/regexp/unbounded/UnboundedRegExpIteration.h

@@ -13,12 +13,6 @@
 namespace regexp {
-namespace simplify {
-
-class RegExpOptimize;
-
-} /* namespace simplify */
-
 /**
  * Represents iteration operator in the regular expression. Contains one UnboundedRegExpElement
  * as operand.
@@ -91,8 +85,6 @@ public:
 	 */
 	virtual void operator >>( std::ostream & out ) const;
-	friend class simplify::RegExpOptimize;
-
 	virtual explicit operator std::string ( ) const;
 };