test: remove "Comet (Scan)" cases from microbenchmarks #8107

Job	Run time
Lint	41s
Build Native Library (macOS)	28m 33s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [csv]	6m 32s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [expressions]	21m 24s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [exec]	18m 17s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [parquet]	10m 43s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [shuffle]	14m 0s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [sql]	8m 20s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [parquet]	12m 20s
macos-14/Spark 4.0, JDK 17, Scala 2.13 [fuzz]	15m 39s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [expressions]	17m 38s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [shuffle]	24m 58s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [parquet]	13m 18s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [exec]	30m 30s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [fuzz]	19m 3s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [csv]	7m 49s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [shuffle]	21m 4s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [csv]	6m 57s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [fuzz]	18m 3s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [expressions]	21m 39s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [sql]	6m 52s
macos-14/Spark 4.2, JDK 17, Scala 2.13 [exec]	25m 6s
macos-14/Spark 4.1, JDK 17, Scala 2.13 [sql]	8m 35s
	5h 58m 1s

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