checker: merge ambiguous_function_call tests (#8388)

vlib/v/checker/tests/ambiguous_function_call.out

@@ -0,0 +1,13 @@
+vlib/v/checker/tests/ambiguous_function_call.vv:2:2: error: ambiguous call to: `foo1`, may refer to fn `foo1` or variable `foo1`
+    1 | fn foo1(foo1 int) {
+    2 |     foo1(foo1 + 1)
+      |     ~~~~~~~~~~~~~~
+    3 | }
+    4 |
+vlib/v/checker/tests/ambiguous_function_call.vv:7:2: error: ambiguous call to: `foo2`, may refer to fn `foo2` or variable `foo2`
+    5 | fn foo2() {
+    6 |     foo2 := 1
+    7 |     foo2(foo2)
+      |     ~~~~~~~~~~
+    8 | }
+    9 |

vlib/v/checker/tests/ambiguous_function_call.vv

@@ -0,0 +1,13 @@
+fn foo1(foo1 int) {
+	foo1(foo1 + 1)
+}
+
+fn foo2() {
+	foo2 := 1
+	foo2(foo2)
+}
+
+fn main() {
+	foo1(5)
+	foo2()
+}

vlib/v/checker/tests/ambiguous_function_call_a.out

@@ -1,6 +0,0 @@
-vlib/v/checker/tests/ambiguous_function_call_a.vv:2:2: error: ambiguous call to: `foo`, may refer to fn `foo` or variable `foo` 
-    1 | fn foo(foo int) {
-    2 |     foo(foo + 1)
-      |     ~~~~~~~~~~~~
-    3 | }
-    4 |

vlib/v/checker/tests/ambiguous_function_call_a.vv

@@ -1,7 +0,0 @@
-fn foo(foo int) {
-	foo(foo + 1)
-}
-
-fn main() {
-	foo(5)
-}

vlib/v/checker/tests/ambiguous_function_call_b.out

@@ -1,7 +0,0 @@
-vlib/v/checker/tests/ambiguous_function_call_b.vv:3:2: error: ambiguous call to: `foo`, may refer to fn `foo` or variable `foo` 
-    1 | fn foo() {
-    2 |     foo := 1
-    3 |     foo(foo)
-      |     ~~~~~~~~
-    4 | }
-    5 |

vlib/v/checker/tests/ambiguous_function_call_b.vv

@@ -1,8 +0,0 @@
-fn foo() {
-	foo := 1
-	foo(foo)
-}
-
-fn main() {
-	foo()
-}