Remove pom-resolve code and references (#3927)

This deletes the pom-resolve and pom-publish and referencing scripts/files.
We will probably find more as time goes on, this is just functional for now.

There are a couple obvious references I kept because they explain the changes
with the new Ivy vs Pom-resolve.

Pom-resolve is available on PyPi as a Pants plugin:
https://pypi.python.org/pypi/fsqio.pants.pom-resolve

See the [buildgen README](src/python/fsqio/pants/buildgen) for some example
config.
(sapling split of 8edfc6976cfa9a43466d503535c2fefde199e6bb)

.travis.yml

@@ -5,8 +5,8 @@ before_cache:
 - rm -rf $HOME/.cache/pants/stats
 cache:
   directories:
-  - ".local_artifact_cache/fsqio_pants_pom_pom_resolve_PomResolve"
-  - ".local_artifact_cache/fsqio_pants_spindle_tasks_build_spindle_BuildSpindle"
+  - ".local_artifact_cache/"
+  - .pants.bootstrap/bin
   - "$HOME/.pom2"
   - "$HOME/.cache/pip"
   - "$HOME/.ivy2/pants"

README.md

@@ -19,8 +19,6 @@ internally, all of the tools can be built just as we use them, directly from HEA
 An exception aggregator using mongodb.
 * [Fhttp](https://github.com/foursquare/fsqio/tree/master/src/jvm/io/fsq/fhttp):
 A request building interface similar to scalaj-http for Finagle http clients.
-* [Pants pom-resolve](https://github.com/foursquare/fsqio/tree/master/src/python/fsqio/pants/pom):
-A drop-in Python replacement for the Pants ivy resolver.
 * [Rogue](https://github.com/foursquare/fsqio/tree/master/src/jvm/io/fsq/rogue): A Scala DSL for MongoDB
 * [Spindle](https://github.com/foursquare/fsqio/tree/master/src/jvm/io/fsq/spindle): A Scala code generator for Thrift
 * [Twofishes](https://github.com/foursquare/fsqio/tree/master/src/jvm/io/fsq/twofishes):
@@ -58,12 +56,9 @@ in this README we will just touch on how to compile and test the code.
 
 ## Compiling and Testing
 #### First Run
-The first run will take a long time as
-[pom-resolve](https://github.com/foursquare/fsqio/tree/master/src/python/fsqio/pants/pom)
-(our custom resolver for 3rdparty dependencies) computes the project graph and downloads the dependencies.
-Maybe as long as 15-20 mins! A good first run is to get this out of the way:
+A good first run is to compile the repo and run every test.
 
-     ./pants pom-resolve
+     ./pants compile test src:: test::
 
 #### Targets and BUILD files
 Targets are adressable project or dependency level modules that can be built by Pants. `BUILD` files are

src/python/fsqio/pants/buildgen/jvm/core/map_third_party_jar_symbols.py

@@ -36,9 +36,6 @@ def product_types(cls):
   @classmethod
   def prepare(cls, options, round_manager):
     super(MapThirdPartyJarSymbols, cls).prepare(options, round_manager)
-
-    # NOTE(mateo): This is a deprecated concept upstream - everything is in the classpath now. So it will take some
-    # fiddling to get the jar symbols for anyone not using pom-resolve.
     round_manager.require_data('compile_classpath')
     round_manager.require_data('java')
     round_manager.require_data('scala')
@@ -116,7 +113,5 @@ def execute(self):
       products.safe_create_data('third_party_jar_symbols', lambda: third_party_jar_symbols)
 
   def check_artifact_cache_for(self, invalidation_check):
-    # Pom-resolve is an output dependent on the entire target set, and is not divisible
-    # by target. So we can only cache it keyed by the entire target set.
     global_vts = VersionedTargetSet.from_versioned_targets(invalidation_check.all_vts)
     return [global_vts]

src/python/fsqio/pants/buildgen/jvm/scala/map_scala_library_used_addresses.py

@@ -148,9 +148,6 @@ def _scala_library_used_addresses(self, target):
         continue
       for address in addresses:
         dep = self.context.build_graph.get_target(address)
-
-        # NOTE(mateo): This cannot happen when using pom-resolve, but OSS consumers have been bitten when dep is None.
-        # I was unable to repro using Ivy, but this check is cheap enough to be worth it no matter the resolver.
         if not dep:
           raise UsedSymbolException("An address was used that was not injected into the build graph! Make sure that "
             "there is a matching BUILD definition for this used address: {}".format(address))