[Cleanup] Removed .jvm.cs files that are no longer used

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed net_1_1_java*.sources files

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed net_1_1_java from Makefiles

It was once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed JavaEE csproj and sln files

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed files that imported Java namespaces

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed TARGET_JVM

It was once part of a special Java target profile, but this is no longer used today.
Merge pull request #1200 from akoeplinger/remove-jvm

[Cleanup] Remove TARGET_JVM