Disable highlight-symbol-mode in go-mode

Instead use the much more reliable go-guru-hl-identifier-mode.

modules/siren-golang.el

@@ -34,6 +34,7 @@
     ;; gofmt on save
     (add-hook 'before-save-hook 'gofmt-before-save nil t)
 
+    (highlight-symbol-mode -1)
     (hs-minor-mode 1)
     (hideshowvis-enable)
     (whitespace-toggle-options '(tabs))

modules/siren-highlight-symbol.el

@@ -7,6 +7,7 @@
 ;;; Code:
 
 (use-package highlight-symbol
+  :diminish highlight-symbol-mode
   :bind
   ("C-c C-p" . highlight-symbol-prev)
   ("C-c C-n" . highlight-symbol-next)