Move a11ychecker sources to an isolated dependency

Per the discussions on ag/28470431 and ag/28136135, a11ychecker's "aatf" dependency can't be included in the system server since it pulls in test-only dependency. The goal of this CL is to remove the dependency from the system server while this is resolved.

Bug: 364326163
Flag: com.android.server.accessibility.enable_a11y_checker_logging
Test: N/A
Change-Id: I0cf2cf6ddce2eff0a70d36d90c9b79101db9dab6
diff --git a/services/accessibility/Android.bp b/services/accessibility/Android.bp
index 3d7ad0b..b97ff62 100644
--- a/services/accessibility/Android.bp
+++ b/services/accessibility/Android.bp
@@ -10,6 +10,7 @@
 filegroup {
     name: "services.accessibility-sources",
     srcs: ["java/**/*.java"],
+    exclude_srcs: ["java/**/a11ychecker/*.java"],
     path: "java",
     visibility: ["//frameworks/base/services"],
 }
@@ -26,16 +27,13 @@
     },
     srcs: [
         ":services.accessibility-sources",
-        ":statslog-accessibility-java-gen",
         "//frameworks/base/packages/SettingsLib/RestrictedLockUtils:SettingsLibRestrictedLockUtilsSrc",
     ],
     libs: [
-        "aatf",
         "services.core",
         "androidx.annotation_annotation",
     ],
     static_libs: [
-        "accessibility_protos_lite",
         "com_android_server_accessibility_flags_lib",
         "//frameworks/base/packages/SystemUI/aconfig:com_android_systemui_flags_lib",
     ],
@@ -70,12 +68,3 @@
     name: "com_android_server_accessibility_flags_lib",
     aconfig_declarations: "com_android_server_accessibility_flags",
 }
-
-genrule {
-    name: "statslog-accessibility-java-gen",
-    tools: ["stats-log-api-gen"],
-    cmd: "$(location stats-log-api-gen) --java $(out) --module accessibility" +
-        " --javaPackage com.android.server.accessibility.a11ychecker" +
-        " --javaClass AccessibilityCheckerStatsLog --minApiLevel 34",
-    out: ["java/com/android/server/accessibility/a11ychecker/AccessibilityCheckerStatsLog.java"],
-}