Remove debian/patches/wasm-*, old cruft from a mv

Commit 2084cb7 moved the wasm patches to debian/patches/wasm/, but the
older, now unused (not referenced in d/p/series) files remained behind
on the three-way merge for the 15 branch. Remove them.

debian/patches/wasm-compiler-rt-default.diff

@@ -1,31 +0,0 @@
---- a/clang/lib/Driver/ToolChains/WebAssembly.cpp
-+++ b/clang/lib/Driver/ToolChains/WebAssembly.cpp
-@@ -369,6 +369,18 @@ ToolChain::RuntimeLibType WebAssembly::G
-   return ToolChain::RLT_CompilerRT;
- }
- 
-+ToolChain::RuntimeLibType WebAssembly::GetRuntimeLibType(
-+    const ArgList &Args) const {
-+  if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
-+    StringRef Value = A->getValue();
-+    if (Value != "compiler-rt")
-+      getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
-+          << Value << "WebAssembly";
-+  }
-+
-+  return ToolChain::RLT_CompilerRT;
-+}
-+
- ToolChain::CXXStdlibType
- WebAssembly::GetCXXStdlibType(const ArgList &Args) const {
-   if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
---- a/clang/lib/Driver/ToolChains/WebAssembly.h
-+++ b/clang/lib/Driver/ToolChains/WebAssembly.h
-@@ -61,6 +61,7 @@ private:
-                         llvm::opt::ArgStringList &CC1Args,
-                         Action::OffloadKind DeviceOffloadKind) const override;
-   RuntimeLibType GetDefaultRuntimeLibType() const override;
-+  RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const override;
-   CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
-   void
-   AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,

debian/patches/wasm-sysroot-usr.diff

@@ -1,62 +0,0 @@
---- a/clang/lib/Driver/ToolChains/WebAssembly.cpp
-+++ b/clang/lib/Driver/ToolChains/WebAssembly.cpp
-@@ -174,7 +174,7 @@ WebAssembly::WebAssembly(const Driver &D
- 
-   getProgramPaths().push_back(getDriver().getInstalledDir());
- 
--  auto SysRoot = getDriver().SysRoot;
-+  std::string SysRoot = computeSysRoot();
-   if (getTriple().getOS() == llvm::Triple::UnknownOS) {
-     // Theoretically an "unknown" OS should mean no standard libraries, however
-     // it could also mean that a custom set of libraries is in use, so just add
-@@ -402,6 +402,7 @@ void WebAssembly::AddClangSystemIncludeA
-     return;
- 
-   const Driver &D = getDriver();
-+  std::string SysRoot = computeSysRoot();
- 
-   if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
-     SmallString<128> P(D.ResourceDir);
-@@ -427,10 +428,10 @@ void WebAssembly::AddClangSystemIncludeA
- 
-   if (getTriple().getOS() != llvm::Triple::UnknownOS) {
-     const std::string MultiarchTriple =
--        getMultiarchTriple(D, getTriple(), D.SysRoot);
--    addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include/" + MultiarchTriple);
-+        getMultiarchTriple(D, getTriple(), SysRoot);
-+    addSystemInclude(DriverArgs, CC1Args, SysRoot + "/include/" + MultiarchTriple);
-   }
--  addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include");
-+  addSystemInclude(DriverArgs, CC1Args, SysRoot + "/include");
- }
- 
- void WebAssembly::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
-@@ -478,6 +479,17 @@ Tool *WebAssembly::buildLinker() const {
-   return new tools::wasm::Linker(*this);
- }
- 
-+std::string WebAssembly::computeSysRoot() const {
-+  if (!getDriver().SysRoot.empty())
-+    return getDriver().SysRoot;
-+
-+  std::string Path = "/usr";
-+  if (getVFS().exists(Path))
-+    return Path;
-+
-+  return std::string();
-+}
-+
- void WebAssembly::addLibCxxIncludePaths(
-     const llvm::opt::ArgList &DriverArgs,
-     llvm::opt::ArgStringList &CC1Args) const {
---- a/clang/lib/Driver/ToolChains/WebAssembly.h
-+++ b/clang/lib/Driver/ToolChains/WebAssembly.h
-@@ -89,6 +89,8 @@ private:
-                              llvm::opt::ArgStringList &CC1Args) const;
-   void addLibStdCXXIncludePaths(const llvm::opt::ArgList &DriverArgs,
-                                 llvm::opt::ArgStringList &CC1Args) const;
-+
-+  std::string computeSysRoot() const override;
- };
- 
- } // end namespace toolchains