refactor: remove misleading comments about SET search_path

Remove notes about "SET search_path is session-specific" from test
comments since these tests use explicit schema parameter or schema-
qualified table names, not SET search_path SQL command.

Author: lingcoder

contrib/drivers/gaussdb/gaussdb_z_unit_issue_test.go

@@ -18,8 +18,6 @@ import (
 
 // https://github.com/gogf/gf/issues/4495
 // Test Tables() returns tables from specific schema using explicit schema parameter.
-// Note: SET search_path is session-specific and doesn't work reliably with connection pooling.
-// The recommended approach is to use db.Tables(ctx, schema) with explicit schema parameter.
 func Test_Issue4495_Tables_SearchPath(t *testing.T) {
 	var (
 		schema1     = fmt.Sprintf("test_schema1_%d", gtime.TimestampNano())
@@ -89,9 +87,7 @@ func Test_Issue4495_Tables_SearchPath(t *testing.T) {
 
 // https://github.com/gogf/gf/issues/4495
 // Test TableFields() returns correct field info for same-name tables in different schemas
-// using schema-qualified table names.
-// Note: SET search_path is session-specific and doesn't work reliably with connection pooling.
-// The recommended approach is to use schema-qualified table names like "schema.table".
+// using schema-qualified table names like "schema.table".
 func Test_Issue4495_TableFields_SchemaFilter(t *testing.T) {
 	var (
 		schema1   = fmt.Sprintf("test_schema1_%d", gtime.TimestampNano())

contrib/drivers/pgsql/pgsql_z_unit_issue_test.go

@@ -294,8 +294,6 @@ func Test_Issue4500(t *testing.T) {
 
 // https://github.com/gogf/gf/issues/4495
 // Test Tables() returns tables from specific schema using explicit schema parameter.
-// Note: SET search_path is session-specific and doesn't work reliably with connection pooling.
-// The recommended approach is to use db.Tables(ctx, schema) with explicit schema parameter.
 func Test_Issue4495_Tables_SearchPath(t *testing.T) {
 	var (
 		schema1     = fmt.Sprintf("test_schema1_%d", gtime.TimestampNano())
@@ -365,9 +363,7 @@ func Test_Issue4495_Tables_SearchPath(t *testing.T) {
 
 // https://github.com/gogf/gf/issues/4495
 // Test TableFields() returns correct field info for same-name tables in different schemas
-// using schema-qualified table names.
-// Note: SET search_path is session-specific and doesn't work reliably with connection pooling.
-// The recommended approach is to use schema-qualified table names like "schema.table".
+// using schema-qualified table names like "schema.table".
 func Test_Issue4495_TableFields_SchemaFilter(t *testing.T) {
 	var (
 		schema1   = fmt.Sprintf("test_schema1_%d", gtime.TimestampNano())