[lldb/tests] Removed add_test_categories decorator for python API tests, NFC

There is a .categories file in the python_api directory that makes all nested tests
belong to the category "pyapi". The decorator is unnecessary for these tests.

lldb/test/API/python_api/module_section/TestModuleAndSection.py

@@ -19,7 +19,6 @@ class ModuleAndSectionAPIsTestCase(TestBase):
     # Py3 asserts due to a bug in SWIG.  A fix for this was upstreamed into
     # SWIG 3.0.8.
     @skipIf(py_version=['>=', (3, 0)], swig_version=['<', (3, 0, 8)])
-    @add_test_categories(['pyapi'])
     def test_module_and_section(self):
         """Test module and section APIs."""
         self.build()
@@ -71,7 +70,6 @@ class ModuleAndSectionAPIsTestCase(TestBase):
                             symbol_type_to_str(
                                 sym.GetType()))
 
-    @add_test_categories(['pyapi'])
     def test_module_and_section_boundary_condition(self):
         """Test module and section APIs by passing None when it expects a Python string."""
         self.build()
@@ -112,7 +110,6 @@ class ModuleAndSectionAPIsTestCase(TestBase):
         if sec1:
             sec1.FindSubSection(None)
 
-    @add_test_categories(['pyapi'])
     def test_module_compile_unit_iter(self):
         """Test module's compile unit iterator APIs."""
         self.build()
@@ -140,7 +137,6 @@ class ModuleAndSectionAPIsTestCase(TestBase):
         for cu in exe_module.compile_unit_iter():
             print(cu)
 
-    @add_test_categories(['pyapi'])
     def test_find_compile_units(self):
         """Exercise SBModule.FindCompileUnits() API."""
         d = {'EXE': 'b.out'}