Revert "Run some pde.build tests with Tycho"

[iloveeclipse]

This reverts commit 6e5138a as it will introduce cyclic build error in the aggregator build.

See eclipse-platform/eclipse.platform.releng.aggregator#1639
See #980

[iloveeclipse]

https://ci.eclipse.org/pde/job/eclipse.pde/job/PR-985/1/ shows zero test fails.

[github-actions]

Test Results

   264 files   -        9     264 suites   - 9   39m 20s ⏱️ - 21m 0s
3 330 tests  -    113  3 299 ✔️  -      35  30 💤  - 17  1 ❌  - 21 
7 563 runs   - 3 063  7 496 ✔️  - 2 804  66 💤  - 75  1 ❌  - 65 

For more details on these failures, see this check.

Results for commit 38510a1. ± Comparison against base commit a633bfb.

This pull request removes 114 and adds 1 tests. Note that renamed tests count towards both.

org.eclipse.pde.build.internal.tests.AssembleTests ‑ testBug179612_custom
org.eclipse.pde.build.internal.tests.AssembleTests ‑ testBug179612_default
org.eclipse.pde.build.internal.tests.AssembleTests ‑ testBug196754
org.eclipse.pde.build.internal.tests.AssembleTests ‑ testBug211605
org.eclipse.pde.build.internal.tests.AssembleTests ‑ testBug255824
org.eclipse.pde.build.internal.tests.AssembleTests ‑ testCustomAssembly
org.eclipse.pde.build.internal.tests.FetchTests ‑ Unknown test
org.eclipse.pde.build.internal.tests.ProductTests ‑ test186224
org.eclipse.pde.build.internal.tests.ProductTests ‑ test218878
org.eclipse.pde.build.internal.tests.ProductTests ‑ test234032
…

AllPDETests org.eclipse.pde.ui.tests.launcher.AllLauncherTests org.eclipse.pde.ui.tests.launcher.FeatureBasedLaunchTest ‑ Unknown test

[iloveeclipse]