llvm-core/clang: drop obsolete GCC 16 workaround

Closes: https://bugs.gentoo.org/968756
Signed-off-by: Sam James <sam@gentoo.org>

llvm-core/clang/clang-16.0.6-r1.ebuild

@@ -353,9 +353,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-17.0.6-r1.ebuild

@@ -350,9 +350,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-18.1.8-r7.ebuild

@@ -353,9 +353,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-19.1.7-r1.ebuild

@@ -341,9 +341,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-20.1.8.ebuild

@@ -343,9 +343,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-21.1.8.ebuild

@@ -343,9 +343,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-22.1.2.ebuild

@@ -346,9 +346,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-22.1.3.ebuild

@@ -346,9 +346,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-23.0.0.9999.ebuild

@@ -346,9 +346,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

llvm-core/clang/clang-23.0.0_pre20260331.ebuild

@@ -346,9 +346,6 @@ multilib_src_configure() {
 		)
 	fi
 
-	# Workaround for bug #968756 (gcc PR123588)
-	tc-is-gcc && [[ $(gcc-major-version) -eq 16 ]] && local -x CXXFLAGS="${CXXFLAGS} -fno-tree-vectorize"
-
 	# LLVM can have very high memory consumption while linking,
 	# exhausting the limit on 32-bit linker executable
 	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"