Remove s390x patch

This patch is no longer required to build.

Also, assign a patch number to the denormal disabler patch, because in
RHEL 8 it's an error for more than one patch to lack a patch number.

Related: RHEL-84089

s390x-build.patch

@@ -1,13 +0,0 @@
-diff --git a/Source/ThirdParty/ANGLE/src/common/mathutil.h b/Source/ThirdParty/ANGLE/src/common/mathutil.h
-index 8f4579dc5611..4d981d4427bc 100644
---- a/Source/ThirdParty/ANGLE/src/common/mathutil.h
-+++ b/Source/ThirdParty/ANGLE/src/common/mathutil.h
-@@ -550,7 +550,7 @@ inline R roundToNearest(T input)
- {
-     static_assert(std::is_floating_point<T>::value);
-     static_assert(std::numeric_limits<R>::is_integer);
--#if defined(__aarch64__) || defined(_M_ARM64)
-+#if defined(__aarch64__) || defined(_M_ARM64) || defined(__s390x__)
-     // On armv8, this expression is compiled to a dedicated round-to-nearest instruction
-     return static_cast<R>(std::round(input));
- #else

webkit2gtk3.spec

@@ -27,7 +27,6 @@ Source2:        webkitgtk-keys.gpg
 ##
 
 Patch100:       compiler-flags.patch
-Patch101:       s390x-build.patch
 
 ##
 ## Patches to support older or missing build dependencies
@@ -50,7 +49,7 @@ Patch301:       evolution-sandbox-warning.patch
 ## Upstream patches to remove, hopefully after next update
 ##
 
-Patch:          denormal-disabler-build.patch
+Patch400:       denormal-disabler-build.patch
 
 BuildRequires:  bison
 BuildRequires:  clang