chore: remove unused imports

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PiperOrigin-RevId: 436716640

Source-Link: googleapis/googleapis@ab8c7d2

Source-Link: https://github.com/googleapis/googleapis-gen/commit/05c806948faa4efd7f83e6f375cac941aef40811
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[blakeli0]

[ERROR] documentai.v1beta2.BatchParseFormBetaTest.testBatchParseForm  Time elapsed: 66.212 s  <<< ERROR!
com.google.protobuf.InvalidProtocolBufferException: Cannot find field: content in message google.cloud.documentai.v1beta2.Document.TextAnchor
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeMessage(JsonFormat.java:1500)
	at com.google.protobuf.util.JsonFormat$ParserImpl.merge(JsonFormat.java:1460)
	at com.google.protobuf.util.JsonFormat$ParserImpl.parseFieldValue(JsonFormat.java:2003)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeField(JsonFormat.java:1665)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeMessage(JsonFormat.java:1502)
	at com.google.protobuf.util.JsonFormat$ParserImpl.merge(JsonFormat.java:1460)
	at com.google.protobuf.util.JsonFormat$ParserImpl.parseFieldValue(JsonFormat.java:2003)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeField(JsonFormat.java:1665)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeMessage(JsonFormat.java:1502)
	at com.google.protobuf.util.JsonFormat$ParserImpl.merge(JsonFormat.java:1460)
	at com.google.protobuf.util.JsonFormat$ParserImpl.parseFieldValue(JsonFormat.java:2003)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeRepeatedField(JsonFormat.java:1728)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeField(JsonFormat.java:1661)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeMessage(JsonFormat.java:1502)
	at com.google.protobuf.util.JsonFormat$ParserImpl.merge(JsonFormat.java:1460)
	at com.google.protobuf.util.JsonFormat$ParserImpl.parseFieldValue(JsonFormat.java:2003)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeRepeatedField(JsonFormat.java:1728)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeField(JsonFormat.java:1661)
	at com.google.protobuf.util.JsonFormat$ParserImpl.mergeMessage(JsonFormat.java:1502)
	at com.google.protobuf.util.JsonFormat$ParserImpl.merge(JsonFormat.java:1460)
	at com.google.protobuf.util.JsonFormat$ParserImpl.merge(JsonFormat.java:1320)
	at com.google.protobuf.util.JsonFormat$Parser.merge(JsonFormat.java:491)
	at documentai.v1beta2.BatchParseFormBeta.batchParseFormGcs(BatchParseFormBeta.java:158)
	at documentai.v1beta2.BatchParseFormBetaTest.testBatchParseForm(BatchParseFormBetaTest.java:94)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:364)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:272)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:237)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:158)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:428)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
	at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:562)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:548)```