Revert "[clang-format] Keep protobuf "package" statement on one line"

This reverts commit r356835. This patch causes a regression, see the
test below:

verifyFormat("// Detached comment\n\n"
             "// Leading comment\n"
             "syntax = \"proto2\"; // trailing comment\n\n"
             "// in foo.bar package\n"
             "package foo.bar; // foo.bar package\n");

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@356912 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Format/TokenAnnotator.cpp

@@ -1119,10 +1119,10 @@ public:
       return LT_ImportStatement;
     }
 
-    // In .proto files, top-level options and package statements are very
-    // similar to import statements and should not be line-wrapped.
+    // In .proto files, top-level options are very similar to import statements
+    // and should not be line-wrapped.
     if (Style.Language == FormatStyle::LK_Proto && Line.Level == 0 &&
-        CurrentToken->isOneOf(Keywords.kw_option, Keywords.kw_package)) {
+        CurrentToken->is(Keywords.kw_option)) {
       next();
       if (CurrentToken && CurrentToken->is(tok::identifier))
         return LT_ImportStatement;

unittests/Format/FormatTestProto.cpp

@@ -393,12 +393,6 @@ TEST_F(FormatTestProto, FormatsOptions) {
                "};");
 }
 
-TEST_F(FormatTestProto, DoesntWrapPackageStatements) {
-  verifyFormat(
-      "package"
-      " some.really.long.package.that.exceeds.the.column.limit00000000;");
-}
-
 TEST_F(FormatTestProto, FormatsService) {
   verifyFormat("service SearchService {\n"
                "  rpc Search(SearchRequest) returns (SearchResponse) {\n"