Increase removal timeout when uninstall (#4921) (#4927)

On particularly slow machines 30 seconds might be still not enough to
release the agent binary, so we're able to remove it on
uninstall. This change doubles the timeout to 60 seconds.

(cherry picked from commit 1f3ddcd)

Co-authored-by: Denis <denis.rechkunov@elastic.co>

Author: mergify[bot]

changelog/fragments/1718268915-increase-remove-timeout.yaml

@@ -0,0 +1,3 @@
+kind: bug-fix
+summary: Increase removal timeout when uninstall
+component: "elastic-agent"

internal/pkg/agent/install/uninstall.go

@@ -168,7 +168,7 @@ func checkForUnprivilegedVault(ctx context.Context, opts ...vault.OptionFunc) (b
 // to an ERROR_SHARING_VIOLATION. RemovePath will retry up to 2
 // seconds if it keeps getting that error.
 func RemovePath(path string) error {
-	const arbitraryTimeout = 30 * time.Second
+	const arbitraryTimeout = 60 * time.Second
 	start := time.Now()
 	var lastErr error
 	for time.Since(start) <= arbitraryTimeout {