Rename oppia_android_module_level_test.

These are layer-level tests, not 'module' tests as that's a Gradle
concept that doesn't make sense in a Bazel-only world (and only adds
confusion).

app/app_test.bzl

@@ -2,7 +2,7 @@
 Macros for app layer tests.
 """
 
-load("//:oppia_android_test.bzl", "oppia_android_module_level_test")
+load("//:oppia_android_test.bzl", "oppia_android_layer_level_test")
 
 # TODO(#1620): Remove layer-specific test macros once Gradle is removed
 def app_test(
@@ -28,7 +28,7 @@ def app_test(
         filtered_tests: list of str. The test files that should not have tests defined for them.
         **kwargs: additional parameters passed in.
     """
-    oppia_android_module_level_test(
+    oppia_android_layer_level_test(
         name = name,
         filtered_tests = filtered_tests,
         deps = deps,

data/data_test.bzl

@@ -2,7 +2,7 @@
 Macros for data tests.
 """
 
-load("//:oppia_android_test.bzl", "oppia_android_module_level_test")
+load("//:oppia_android_test.bzl", "oppia_android_layer_level_test")
 
 # TODO(#1620): Remove layer-specific test macros once Gradle is removed
 def data_test(name, filtered_tests, deps, **kwargs):
@@ -15,7 +15,7 @@ def data_test(name, filtered_tests, deps, **kwargs):
         deps: list of str. The list of dependencies needed to build and run this test.
         **kwargs: additional parameters passed in.
     """
-    oppia_android_module_level_test(
+    oppia_android_layer_level_test(
         name = name,
         filtered_tests = filtered_tests,
         deps = deps,

domain/domain_test.bzl

@@ -2,7 +2,7 @@
 Macros for domain layer tests.
 """
 
-load("//:oppia_android_test.bzl", "oppia_android_module_level_test")
+load("//:oppia_android_test.bzl", "oppia_android_layer_level_test")
 
 # TODO(#1620): Remove layer-specific test macros once Gradle is removed
 def domain_test(name, filtered_tests, deps):
@@ -15,7 +15,7 @@ def domain_test(name, filtered_tests, deps):
         deps: list of str. The list of dependencies needed to build and run this test.
     """
 
-    oppia_android_module_level_test(
+    oppia_android_layer_level_test(
         name = name,
         filtered_tests = filtered_tests,
         deps = deps,

oppia_android_test.bzl

@@ -5,7 +5,7 @@ Central macros pertaining to setting up tests across the codebase.
 load("@io_bazel_rules_kotlin//kotlin:android.bzl", "kt_android_library")
 
 # TODO(#1620): Remove layer-specific test macros once Gradle is removed
-def oppia_android_module_level_test(
+def oppia_android_layer_level_test(
         name,
         filtered_tests,
         deps,

testing/testing_test.bzl

@@ -2,7 +2,7 @@
 Macros for testing tests.
 """
 
-load("//:oppia_android_test.bzl", "oppia_android_module_level_test")
+load("//:oppia_android_test.bzl", "oppia_android_layer_level_test")
 
 # TODO(#1620): Remove layer-specific test macros once Gradle is removed
 def testing_test(name, filtered_tests, deps):
@@ -14,7 +14,7 @@ def testing_test(name, filtered_tests, deps):
         filtered_tests: list of str. The test files that should not have tests defined for them.
         deps: list of str. The list of dependencies needed to build and run this test.
     """
-    oppia_android_module_level_test(
+    oppia_android_layer_level_test(
         name = name,
         filtered_tests = filtered_tests,
         deps = deps,

utility/utility_test.bzl

@@ -2,7 +2,7 @@
 Macros for utility layer tests.
 """
 
-load("//:oppia_android_test.bzl", "oppia_android_module_level_test")
+load("//:oppia_android_test.bzl", "oppia_android_layer_level_test")
 
 # TODO(#1620): Remove layer-specific test macros once Gradle is removed
 def utility_test(name, filtered_tests, deps):
@@ -14,7 +14,7 @@ def utility_test(name, filtered_tests, deps):
         filtered_tests: list of str. The test files that should not have tests defined for them.
         deps: list of str. The list of dependencies needed to build and run this test.
     """
-    oppia_android_module_level_test(
+    oppia_android_layer_level_test(
         name = name,
         filtered_tests = filtered_tests,
         deps = deps,