chore(java-accessapproval): remove extra generated samples #17195

Job	Run time
owlbot-py	1m 19s
gitignore_correctness	1m 1s
root-pom	1m 48s
package_name_check	1m 6s
generate-readme	1m 6s
gapic-bom	1m 42s
owlbot-yaml	1m 8s
group_id_check_for_maps_libraries	7m 56s
	17m 6s

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