Update the imports to androidx.test.filters.*

Bug: 316941721
Test: mmma .
Change-Id: Ifd928a3534c4c843fa0270370a646201b206c49b

apct-tests/perftests/core/src/android/libcore/ImtConflictPerfTestGen.py

@@ -61,8 +61,8 @@ print("package android.libcore;")
 imports = """
 import android.perftests.utils.BenchmarkState;
 import android.perftests.utils.PerfStatusReporter;
-import android.test.suitebuilder.annotation.LargeTest;
 
+import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
@@ -118,4 +118,4 @@ for i in range(max_conflict_depth):
         print("        default void f{}() {{}}".format(i*imt_size + j))
     print("    }")
 
-print("}")
\ No newline at end of file
+print("}")

apct-tests/perftests/core/src/android/libcore/varhandles/generate_java.py

@@ -160,8 +160,8 @@ package android.libcore.varhandles;
 
 import android.perftests.utils.BenchmarkState;
 import android.perftests.utils.PerfStatusReporter;
-import android.test.suitebuilder.annotation.LargeTest;
 
+import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.After;