Remove command-line arguments from Main methods in ILPROJ projects

[trylek]

In my recent change I fixed C# test projects to stop using
command-line arguments. This follow-up change complements it by
applying the same transformation to IL projects. In most cases
the arguments were ignored so the transformation was trivial; in
the special case of twoEndFinallys.il the argument array is
passed to the method TwoEndFinallys so I patched it to allocate
a zero-sized string array instead (there are no tests passing
actual command-line arguments to the test app).

Thanks

Tomas

/cc @dotnet/jit-contrib

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Issue Details

---

In my recent change I fixed C# test projects to stop using
command-line arguments. This follow-up change complements it by
applying the same transformation to IL projects. In most cases
the arguments were ignored so the transformation was trivial; in
the special case of twoEndFinallys.il the argument array is
passed to the method TwoEndFinallys so I patched it to allocate
a zero-sized string array instead (there are no tests passing
actual command-line arguments to the test app).

Thanks

Tomas

/cc @dotnet/jit-contrib

Author:	trylek
Assignees:	-
Labels:	area-Infrastructure-coreclr
Milestone:	-

[trylek]

/azp run runtime-coreclr outerloop

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[trylek]

The one outerloop issue in the new RefField test is known and unrelated to my change that only touches tests under JIT/Methodical, merging in.