Drop support for indexing Scala code #2309

Job	Run time
check	6m 27s
semanticdb-kotlinc	4m 0s
Tests (ubuntu-latest, 11)	12m 14s
Docker CLI tests (ubuntu-latest)	8m 5s
Maven tests (11)	4m 44s
Maven tests (17)	4m 54s
bazel	2m 35s
Maven tests (21)	4m 32s
Tests (ubuntu-latest, 17)	9m 39s
bazel_aspect	4m 26s
Tests (ubuntu-latest, 21)	7m 12s
	1h 8m 48s

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