Avoid compiler warnings by only enabling sqlite3ErrName() when
SQLITE_TEST is defined.

FossilOrigin-Name: 862228e50534a6b89c9498c4db664610db11485e
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index a33ff4d..ce366dc 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -3138,8 +3138,7 @@
 u8 sqlite3HexToInt(int h);
 int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
 
-#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) || \
-    defined(SQLITE_DEBUG_OS_TRACE)
+#if defined(SQLITE_TEST) 
 const char *sqlite3ErrName(int);
 #endif