Revert "[Preset] Dont skip lldb test on Linux package preset"

This reverts commit 42357b6.

On Ubuntu, the LLDB REPL tests fail when using the LLDB from
the build dir as the LLDB test suite uses it.  Those tests
pass when using the install layout built into {root}/usr/bin/lldb.

I'll re-enable this once I have that investigated and working
properly.

This should fix the new issues on the Ubuntu package CI for
the Swift master branch.

Author: Todd Fiala

utils/build-presets.ini

@@ -552,6 +552,7 @@ install-prefix=/usr
 swift-install-components=autolink-driver;compiler;clang-builtin-headers;stdlib;sdk-overlay;license
 build-swift-static-stdlib
 build-swift-stdlib-unittest-extra
+skip-test-lldb
 
 # Executes the lit tests for the installable package that is created
 # Assumes the swift-integration-tests repo is checked out