Clean up Guava imports in BUILD files

This removes the following unnecessary imports:

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The exact command run to generate this CL was:

build_cleaner '//third_party/java_src/gtld/...' -c '' --dep_restrictions='[],[],[],[],[],[],[],[],[],[],[],[],[],[]'

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=202325520

java/google/registry/module/tools/BUILD

@@ -29,7 +29,6 @@ java_library(
         "@com_google_dagger",
         "@com_google_flogger",
         "@com_google_flogger_system_backend",
-        "@com_google_guava",
         "@javax_inject",
         "@javax_servlet_api",
         "@org_bouncycastle_bcpkix_jdk15on",