Remove the old Swift 3.0 preview branch schemes.

Author: bob-wilson

utils/update-checkout-config.json

@@ -71,98 +71,6 @@
                 "ninja": "release"
             }
         },
-        "swift-3.0-preview-1" : {
-            "aliases": ["swift-3.0-preview-1", "swift-3.0-preview-1-branch"],
-            "repos": {
-                "llvm": "swift-3.0-branch",
-                "clang": "swift-3.0-branch",
-                "swift": "swift-3.0-preview-1-branch",
-                "lldb": "swift-3.0-preview-1-branch",
-                "cmark": "swift-3.0-preview-1-branch",
-                "llbuild": "swift-3.0-preview-1-branch",
-                "swiftpm": "swift-3.0-preview-1-branch",
-                "compiler-rt": "swift-3.0-branch",
-                "swift-corelibs-xctest": "swift-3.0-preview-1-branch",
-                "swift-corelibs-foundation": "swift-3.0-preview-1-branch",
-                "swift-corelibs-libdispatch": "swift-3.0-preview-1-branch",
-                "swift-integration-tests": "swift-3.0-preview-1-branch",
-                "ninja": "release"
-            }
-        },
-        "swift-3.0-preview-2" : {
-            "aliases": ["swift-3.0-preview-2", "swift-3.0-preview-2-branch"],
-            "repos": {
-                "llvm": "swift-3.0-branch",
-                "clang": "swift-3.0-branch",
-                "swift": "swift-3.0-preview-2-branch",
-                "lldb": "swift-3.0-preview-2-branch",
-                "cmark": "swift-3.0-preview-2-branch",
-                "llbuild": "swift-3.0-preview-2-branch",
-                "swiftpm": "swift-3.0-preview-2-branch",
-                "compiler-rt": "swift-3.0-branch",
-                "swift-corelibs-xctest": "swift-3.0-preview-2-branch",
-                "swift-corelibs-foundation": "swift-3.0-preview-2-branch",
-                "swift-corelibs-libdispatch": "swift-3.0-preview-2-branch",
-                "swift-integration-tests": "swift-3.0-preview-2-branch",
-                "ninja": "release"
-            }
-        },
-        "swift-3.0-preview-3" : {
-            "aliases": ["swift-3.0-preview-3", "swift-3.0-preview-3-branch"],
-            "repos": {
-                "llvm": "swift-3.0-branch",
-                "clang": "swift-3.0-branch",
-                "swift": "swift-3.0-preview-3-branch",
-                "lldb": "swift-3.0-preview-3-branch",
-                "cmark": "swift-3.0-preview-3-branch",
-                "llbuild": "swift-3.0-preview-3-branch",
-                "swiftpm": "swift-3.0-preview-3-branch",
-                "compiler-rt": "swift-3.0-branch",
-                "swift-corelibs-xctest": "swift-3.0-preview-3-branch",
-                "swift-corelibs-foundation": "swift-3.0-preview-3-branch",
-                "swift-corelibs-libdispatch": "swift-3.0-preview-3-branch",
-                "swift-integration-tests": "swift-3.0-preview-3-branch",
-                "ninja": "release"
-            }
-        },
-        "swift-3.0-preview-4" : {
-            "aliases": ["swift-3.0-preview-4", "swift-3.0-preview-4-branch"],
-            "repos": {
-                "llvm": "swift-3.0-branch",
-                "clang": "swift-3.0-branch",
-                "swift": "swift-3.0-preview-4-branch",
-                "lldb": "swift-3.0-preview-4-branch",
-                "cmark": "swift-3.0-preview-4-branch",
-                "llbuild": "swift-3.0-preview-4-branch",
-                "swiftpm": "swift-3.0-preview-4-branch",
-                "compiler-rt": "swift-3.0-branch",
-                "swift-corelibs-xctest": "swift-3.0-preview-4-branch",
-                "swift-corelibs-foundation": "swift-3.0-preview-4-branch",
-                "swift-corelibs-libdispatch": "swift-3.0-preview-4-branch",
-                "swift-integration-tests": "swift-3.0-preview-4-branch",
-                "swift-xcode-playground-support": "swift-3.0-preview-4-branch",
-                "ninja": "release"
-            }
-        },
-        "swift-3.0-preview-5" : {
-            "aliases": ["swift-3.0-preview-5", "swift-3.0-preview-5-branch"],
-            "repos": {
-                "llvm": "swift-3.0-branch",
-                "clang": "swift-3.0-branch",
-                "swift": "swift-3.0-preview-5-branch",
-                "lldb": "swift-3.0-preview-5-branch",
-                "cmark": "swift-3.0-preview-5-branch",
-                "llbuild": "swift-3.0-preview-5-branch",
-                "swiftpm": "swift-3.0-preview-5-branch",
-                "compiler-rt": "swift-3.0-branch",
-                "swift-corelibs-xctest": "swift-3.0-preview-5-branch",
-                "swift-corelibs-foundation": "swift-3.0-preview-5-branch",
-                "swift-corelibs-libdispatch": "swift-3.0-preview-5-branch",
-                "swift-integration-tests": "swift-3.0-preview-5-branch",
-                "swift-xcode-playground-support": "swift-3.0-preview-5-branch",
-                "ninja": "release"
-            }
-        },
         "swift-3.0-branch" : {
             "aliases": ["swift-3.0-branch"],
             "repos": {