remove local patch now upstream

patches/bn_sqrt.patch

@@ -1,38 +0,0 @@
---- crypto/bn/bn_sqrt.c.orig	Fri Feb 18 16:30:39 2022
-+++ crypto/bn/bn_sqrt.c	Sat Mar 12 11:23:53 2022
-@@ -351,21 +351,22 @@
- 			goto vrfy;
- 		}
- 
--
--		/* find smallest  i  such that  b^(2^i) = 1 */
--		i = 1;
--		if (!BN_mod_sqr(t, b, p, ctx))
--			goto end;
--		while (!BN_is_one(t)) {
--			i++;
--			if (i == e) {
--				BNerror(BN_R_NOT_A_SQUARE);
--				goto end;
-+		/* Find the smallest i with 0 < i < e such that b^(2^i) = 1. */
-+		for (i = 1; i < e; i++) {
-+			if (i == 1) {
-+				if (!BN_mod_sqr(t, b, p, ctx))
-+					goto end;
-+			} else {
-+				if (!BN_mod_sqr(t, t, p, ctx))
-+					goto end;
- 			}
--			if (!BN_mod_mul(t, t, t, p, ctx))
--				goto end;
-+			if (BN_is_one(t))
-+				break;
- 		}
--
-+		if (i >= e) {
-+			BNerror(BN_R_NOT_A_SQUARE);
-+			goto end;
-+		}
- 
- 		/* t := y^2^(e - i - 1) */
- 		if (!BN_copy(t, y))