update test matrices and remove COPY lines

COPY lines in Dockerfile were backported from 3.x where we have
package.json and yarn.lock checked in directly. In 2.x we're pulling
in lattice as a submodule and it does not have those... I think this
means that versions of dependencies aren't necessarily pinned, but
given that Q2 isn't heavily dependent on the UI this should be OK.

.circleci/config.yml

@@ -226,7 +226,7 @@ workflows:
             - setup
           matrix:
             parameters:
-              golang_version: ["1.14.12", "1.15.5"]
+              golang_version: ["1.16.7"]
       - test:
           name: << matrix.test_make_target >>
           resource_class: xlarge
@@ -235,7 +235,7 @@ workflows:
             - setup
           matrix:
             parameters:
-              test_make_target: ["test-race", "test-txstore-rbf", "test-txstore-rbf_bolt"]
+              test_make_target: ["test-race"]
       - test:
           name: test-shardwidth-22
           shard_width: "22"

Dockerfile

@@ -7,8 +7,6 @@ ARG GO_VERSION=latest
 FROM moleculacorp/nodejs:latest as lattice-builder
 WORKDIR /lattice
 
-COPY lattice/package.json ./
-COPY lattice/yarn.lock ./
 RUN yarn install
 
 COPY lattice ./