Local flow tests: do not list summary models

This is so that when we don't change the test results every time we add
a summary model for a built-in function.

Author: owen-mc

go/ql/test/library-tests/semmle/go/dataflow/FlowSteps/LocalFlowStep.expected

@@ -1,5 +1,3 @@
-| file://:0:0:0:0 | [summary param] 1 in append | file://:0:0:0:0 | [summary] to write: ReturnValue.ArrayElement in append |
-| file://:0:0:0:0 | [summary] read: Argument[0].ArrayElement in append | file://:0:0:0:0 | [summary] to write: ReturnValue.ArrayElement in append |
 | file://:0:0:0:0 | function Encode | url.go:51:14:51:21 | selection of Encode |
 | file://:0:0:0:0 | function EscapedPath | url.go:28:14:28:26 | selection of EscapedPath |
 | file://:0:0:0:0 | function Get | url.go:52:14:52:18 | selection of Get |

go/ql/test/library-tests/semmle/go/dataflow/FlowSteps/LocalFlowStep.ql

@@ -1,5 +1,7 @@
 import go
 
 from DataFlow::Node nd, DataFlow::Node succ
-where DataFlow::localFlowStep(nd, succ)
+where
+  DataFlow::localFlowStep(nd, succ) and
+  (exists(nd.getFile()) or exists(succ.getFile()))
 select nd, succ

go/ql/test/library-tests/semmle/go/dataflow/PromotedFields/LocalFlowStep.expected

@@ -1,5 +1,3 @@
-| file://:0:0:0:0 | [summary param] 1 in append | file://:0:0:0:0 | [summary] to write: ReturnValue.ArrayElement in append |
-| file://:0:0:0:0 | [summary] read: Argument[0].ArrayElement in append | file://:0:0:0:0 | [summary] to write: ReturnValue.ArrayElement in append |
 | main.go:3:6:3:11 | function source | main.go:23:31:23:36 | source |
 | main.go:3:6:3:11 | function source | main.go:31:31:31:36 | source |
 | main.go:3:6:3:11 | function source | main.go:40:30:40:35 | source |

go/ql/test/library-tests/semmle/go/dataflow/PromotedFields/LocalFlowStep.ql

@@ -1,5 +1,7 @@
 import go
 
 from DataFlow::Node nd, DataFlow::Node succ
-where DataFlow::localFlowStep(nd, succ)
+where
+  DataFlow::localFlowStep(nd, succ) and
+  (exists(nd.getFile()) or exists(succ.getFile()))
 select nd, succ