Remove unused 'countincludesself' argument to pq_sendcountedtext()

It has been unused since we removed support for protocol version 2.

src/backend/access/common/printsimple.c

@@ -95,8 +95,7 @@ printsimple(TupleTableSlot *slot, DestReceiver *self)
 
 					pq_sendcountedtext(&buf,
 									   VARDATA_ANY(t),
-									   VARSIZE_ANY_EXHDR(t),
-									   false);
+									   VARSIZE_ANY_EXHDR(t));
 				}
 				break;
 
@@ -107,7 +106,7 @@ printsimple(TupleTableSlot *slot, DestReceiver *self)
 					int			len;
 
 					len = pg_ltoa(num, str);
-					pq_sendcountedtext(&buf, str, len, false);
+					pq_sendcountedtext(&buf, str, len);
 				}
 				break;
 
@@ -118,7 +117,7 @@ printsimple(TupleTableSlot *slot, DestReceiver *self)
 					int			len;
 
 					len = pg_lltoa(num, str);
-					pq_sendcountedtext(&buf, str, len, false);
+					pq_sendcountedtext(&buf, str, len);
 				}
 				break;
 
@@ -129,7 +128,7 @@ printsimple(TupleTableSlot *slot, DestReceiver *self)
 					int			len;
 
 					len = pg_ultoa_n(num, str);
-					pq_sendcountedtext(&buf, str, len, false);
+					pq_sendcountedtext(&buf, str, len);
 				}
 				break;
 

src/backend/access/common/printtup.c

@@ -355,7 +355,7 @@ printtup(TupleTableSlot *slot, DestReceiver *self)
 			char	   *outputstr;
 
 			outputstr = OutputFunctionCall(&thisState->finfo, attr);
-			pq_sendcountedtext(buf, outputstr, strlen(outputstr), false);
+			pq_sendcountedtext(buf, outputstr, strlen(outputstr));
 		}
 		else
 		{

src/backend/libpq/pqformat.c

@@ -133,30 +133,27 @@ pq_sendbytes(StringInfo buf, const void *data, int datalen)
  *		pq_sendcountedtext - append a counted text string (with character set conversion)
  *
  * The data sent to the frontend by this routine is a 4-byte count field
- * followed by the string.  The count includes itself or not, as per the
- * countincludesself flag (pre-3.0 protocol requires it to include itself).
- * The passed text string need not be null-terminated, and the data sent
- * to the frontend isn't either.
+ * followed by the string.  The count does not include itself, as required by
+ * protocol version 3.0.  The passed text string need not be null-terminated,
+ * and the data sent to the frontend isn't either.
  * --------------------------------
  */
 void
-pq_sendcountedtext(StringInfo buf, const char *str, int slen,
-				   bool countincludesself)
+pq_sendcountedtext(StringInfo buf, const char *str, int slen)
 {
-	int			extra = countincludesself ? 4 : 0;
 	char	   *p;
 
 	p = pg_server_to_client(str, slen);
 	if (p != str)				/* actual conversion has been done? */
 	{
 		slen = strlen(p);
-		pq_sendint32(buf, slen + extra);
+		pq_sendint32(buf, slen);
 		appendBinaryStringInfoNT(buf, p, slen);
 		pfree(p);
 	}
 	else
 	{
-		pq_sendint32(buf, slen + extra);
+		pq_sendint32(buf, slen);
 		appendBinaryStringInfoNT(buf, str, slen);
 	}
 }

src/backend/replication/logical/proto.c

@@ -851,7 +851,7 @@ logicalrep_write_tuple(StringInfo out, Relation rel, TupleTableSlot *slot,
 
 			pq_sendbyte(out, LOGICALREP_COLUMN_TEXT);
 			outputstr = OidOutputFunctionCall(typclass->typoutput, values[i]);
-			pq_sendcountedtext(out, outputstr, strlen(outputstr), false);
+			pq_sendcountedtext(out, outputstr, strlen(outputstr));
 			pfree(outputstr);
 		}
 

src/backend/tcop/fastpath.c

@@ -85,7 +85,7 @@ SendFunctionResult(Datum retval, bool isnull, Oid rettype, int16 format)
 
 			getTypeOutputInfo(rettype, &typoutput, &typisvarlena);
 			outputstr = OidOutputFunctionCall(typoutput, retval);
-			pq_sendcountedtext(&buf, outputstr, strlen(outputstr), false);
+			pq_sendcountedtext(&buf, outputstr, strlen(outputstr));
 			pfree(outputstr);
 		}
 		else if (format == 1)

src/include/libpq/pqformat.h

@@ -23,8 +23,7 @@ extern void pq_endmessage(StringInfo buf);
 extern void pq_endmessage_reuse(StringInfo buf);
 
 extern void pq_sendbytes(StringInfo buf, const void *data, int datalen);
-extern void pq_sendcountedtext(StringInfo buf, const char *str, int slen,
-							   bool countincludesself);
+extern void pq_sendcountedtext(StringInfo buf, const char *str, int slen);
 extern void pq_sendtext(StringInfo buf, const char *str, int slen);
 extern void pq_sendstring(StringInfo buf, const char *str);
 extern void pq_send_ascii_string(StringInfo buf, const char *str);