Eliminate some superfluous conditions in SIKE Go code.

Change-Id: I6baae6b705c42bc08bfe09e17e0316b1e2fa563d
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/36345
Reviewed-by: David Benjamin <davidben@google.com>

ssl/test/runner/sike/sike.go

diff --git a/ssl/test/runner/sike/sike.go b/ssl/test/runner/sike/sike.go
index 51495dc..fc6de05 100644
--- a/ssl/test/runner/sike/sike.go
+++ b/ssl/test/runner/sike/sike.go
@@ -500,7 +500,7 @@
 		dp = &prv.params.B
 	}
 
-	if prv.keyVariant == KeyVariant_SIKE && err == nil {
+	if prv.keyVariant == KeyVariant_SIKE {
 		_, err = io.ReadFull(rand, prv.S)
 	}
 

ssl/test/runner/sike/sike_test.go

diff --git a/ssl/test/runner/sike/sike_test.go b/ssl/test/runner/sike/sike_test.go
index f540c53..2813504 100644
--- a/ssl/test/runner/sike/sike_test.go
+++ b/ssl/test/runner/sike/sike_test.go
@@ -508,9 +508,6 @@
 		panic("sike test: can't perform degcapsulation KAT")
 	}
 
-	if err != nil {
-		return false
-	}
 	return bytes.Equal(ssGot, ssExpected)
 }