Rename ninja variables with Clang in the name

Rename the ninja variables that have an extraneous Clang in the name,
since there are no longer any non-Clang variables.

Bug: 68947919
Test: no change to command lines used to build mmma bionic
Change-Id: I081d5e1d423a66d55faece6cb1d265cd5e504d5f
diff --git a/rust/config/x86_linux_host.go b/rust/config/x86_linux_host.go
index b63e14d..a9fdaed 100644
--- a/rust/config/x86_linux_host.go
+++ b/rust/config/x86_linux_host.go
@@ -79,7 +79,7 @@
 
 func (t *toolchainLinuxX8664) ToolchainLinkFlags() string {
 	// Prepend the lld flags from cc_config so we stay in sync with cc
-	return "${cc_config.LinuxClangLldflags} ${cc_config.LinuxX8664ClangLldflags} " +
+	return "${cc_config.LinuxLldflags} ${cc_config.LinuxX8664Lldflags} " +
 		"${config.LinuxToolchainLinkFlags} ${config.LinuxToolchainX8664LinkFlags}"
 }
 
@@ -117,7 +117,7 @@
 
 func (t *toolchainLinuxX86) ToolchainLinkFlags() string {
 	// Prepend the lld flags from cc_config so we stay in sync with cc
-	return "${cc_config.LinuxClangLldflags} ${cc_config.LinuxX86ClangLldflags} " +
+	return "${cc_config.LinuxLldflags} ${cc_config.LinuxX86Lldflags} " +
 		"${config.LinuxToolchainLinkFlags} ${config.LinuxToolchainX86LinkFlags}"
 }