ENG-1730 Remove use of imp-tool-bootstrap (#43)

Author: Helcaraxan

.toolsharerc

@@ -1,5 +1,3 @@
 pinned_tool:
   - tool: "imp-ci"
     version: "20200206.175502.ed41e47ac7"
-  - tool: "imp-tool"
-    version: "20200217.173900.11796cb28c"

ci/build.sh

@@ -24,11 +24,6 @@ elif [[ "$(uname -s)" == "Darwin" ]]; then
   TOOLBELT_PLATFORM="mac"
   SPATIAL_PLATFORM="macos"
   SPATIAL_BINARY="spatial"
-
-  imp-tool-bootstrap subscribe \
-    --use_gcs_oidc_auth=false \
-    --gcs_credentials_type=auto \
-    --tools=imp-tool
 else
   TOOLBELT_PLATFORM="win"
   SPATIAL_PLATFORM="windows"