RFR: 8234084: [TEST_BUG] Remove unexecuted performance benchmark tests

[Ambarish Rapte]

This PR removes two benchmark tests that are ignored since they were added [here](https://github.com/openjdk/jfx/commit/0dea6d6790ae4eeff3e5ec5a7750251caf91e40b)

test.javafx.scene.input.TouchEventTest.saneOrderingBenchmark
test.javafx.scene.input.TouchEventTest.crazyOrderingBenchmark

Since the tests do not compare but only print the time taken by programmatically generating the touch events and
are not executed since the time they were added, It seems reasonable to remove them.

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Commit messages:
 - remove unextecuted benchmark tests

Changes: https://git.openjdk.java.net/jfx/pull/468/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=468&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8234084
  Stats: 187 lines in 1 file changed: 0 ins; 187 del; 0 mod
  Patch: https://git.openjdk.java.net/jfx/pull/468.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/468/head:pull/468

PR: https://git.openjdk.java.net/jfx/pull/468