[LyX/master] Remove unused Counters::copy

[Yuriy Skalko]

commit 00d07d67326e7e2b65d17a2054f61a72fe34fc7d
Author: Yuriy Skalko <yuriy.skalko at gmail.com>
Date:   Fri Nov 27 23:41:06 2020 +0200

    Remove unused Counters::copy
---
 src/Counters.cpp |   10 ----------
 src/Counters.h   |    4 ----
 2 files changed, 0 insertions(+), 14 deletions(-)

diff --git a/src/Counters.cpp b/src/Counters.cpp
index 139dc9b..6376b64 100644
--- a/src/Counters.cpp
+++ b/src/Counters.cpp
@@ -413,16 +413,6 @@ bool Counters::remove(docstring const & cnt)
 }
 
 
-void Counters::copy(Counters const & from, Counters & to, docstring const & match) const
-{
-	for (auto const & ctr : counterList_) {
-		if (ctr.first.find(match) != string::npos || match == "") {
-			to.set(ctr.first, from.value(ctr.first));
-		}
-	}
-}
-
-
 docstring Counters::labelItem(docstring const & ctr,
 			      docstring const & numbertype) const
 {
diff --git a/src/Counters.h b/src/Counters.h
index e6554a2..ecd6853 100644
--- a/src/Counters.h
+++ b/src/Counters.h
@@ -160,10 +160,6 @@ public:
 	void reset(docstring const & match);
 	/// Remove counter \p cnt.
 	bool remove(docstring const & cnt);
-	/// Copy counters whose name matches match from the &from to
-	/// the &to array of counters. Empty string matches all.
-	void copy(Counters const & from, Counters & to,
-		  docstring const & match = docstring()) const;
 	/** returns the expanded string representation of counter \c
 	 *  c. The \c lang code is used to translate the string.
 	 */