3/3 Remove third_party PDH code (#1870)

* Update hostmetrics disk scraper to use new perfcounters package

* Update hostmetrics load scraper to use new perfcounters package

* Update hostmetrics swap scraper to use new perfcounters package

* Remove third_party code relating to accessing perf counters via pdh

.golangci.yml

@@ -17,7 +17,6 @@ run:
   # default value is empty list, but default dirs are skipped independently
   # from this option's value (see skip-dirs-use-default).
   skip-dirs:
-  - third_party
 
   # default is true. Enables skipping of directories:
   #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$

Makefile

@@ -2,7 +2,6 @@
 # This is the code that we want to run tests for and lint, staticcheck, etc.
 ALL_SRC := $(shell find . -name '*.go' \
 							-not -path './testbed/*' \
-							-not -path '*/third_party/*' \
 							-not -path '*/internal/data/opentelemetry-proto/*' \
 							-not -path '*/internal/data/opentelemetry-proto-gen/*' \
 							-not -path './.circleci/scripts/reportgenerator/*' \

cmd/mdatagen/third_party/golint/.nocover

@@ -0,0 +1 @@
+No tests for third party code.