.golangci.yml: rm legacy and common-false-positives

Those were originally added by golangci-lint migrate, but currently do
not result in any warnings being suppressed.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.golangci.yml

@@ -69,8 +69,6 @@ linters:
     generated: strict
     presets:
       - comments
-      - common-false-positives
-      - legacy
       - std-error-handling
     rules:
       - linters: