refactor(dart_frog_prod_server): removed unused "externalPathDependencies" context variable (#1248)

Author: alestiago

bricks/dart_frog_prod_server/hooks/pre_gen.dart

@@ -113,7 +113,6 @@ Future<void> preGen(
     'invokeCustomInit': configuration.invokeCustomInit,
     'pathDependencies': internalPathDependencies,
     'hasExternalDependencies': externalDependencies.isNotEmpty,
-    'externalPathDependencies': externalDependencies,
     'dartVersion': context.vars['dartVersion'],
     'addDockerfile': addDockerfile,
   };

bricks/dart_frog_prod_server/hooks/test/pre_gen_test.dart

@@ -235,7 +235,6 @@ dev_dependencies:
           'invokeCustomInit': false,
           'pathDependencies': <String>[],
           'hasExternalDependencies': false,
-          'externalPathDependencies': <String>[],
           'dartVersion': 'stable',
           'addDockerfile': true,
         }),
@@ -292,7 +291,6 @@ dependencies:
           'invokeCustomEntrypoint': false,
           'invokeCustomInit': false,
           'hasExternalDependencies': false,
-          'externalPathDependencies': <String>[],
           'pathDependencies': <String>[],
           'dartVersion': 'stable',
           'addDockerfile': false,
@@ -330,7 +328,6 @@ dependencies:
           'invokeCustomEntrypoint': false,
           'invokeCustomInit': true,
           'hasExternalDependencies': false,
-          'externalPathDependencies': <String>[],
           'pathDependencies': <String>[],
           'dartVersion': 'stable',
           'addDockerfile': true,
@@ -481,7 +478,6 @@ dependencies:
             'invokeCustomEntrypoint': false,
             'invokeCustomInit': false,
             'hasExternalDependencies': false,
-            'externalPathDependencies': <String>[],
             'pathDependencies': <String>[],
             'dartVersion': 'stable',
             'addDockerfile': true,