Remove Paket-based build scripts

They don't seem to work on a clean Windows installation with just .NET Core 2.x SDK and .NET Framework 4.6.x Perhaps we should add build scripts that utilize the `dotnet` command(s).
cryptean · moodmosaic · Apr 2, 2018 · Mar 31, 2018 · Mar 31, 2018 · 4fc62bfa4b121b0e94c11b1c4efde7104b77fc59
commit 4fc62bfa4b121b0e94c11b1c4efde7104b77fc59
diff --git a/.paket/Paket.Restore.targets b/.paket/Paket.Restore.targets
diff --git a/.paket/paket.bootstrapper.exe b/.paket/paket.bootstrapper.exe
diff --git a/.paket/paket.exe b/.paket/paket.exe
diff --git a/.paket/paket.targets b/.paket/paket.targets
diff --git a/build.cmd b/build.cmd
diff --git a/build.fsx b/build.fsx
diff --git a/build.sh b/build.sh
diff --git a/paket.dependencies b/paket.dependencies