[lldb] Remove stack_logging.h

This file is covered under the Apple open source license rather than the
LLVM license. Presumably this was an oversight, but it doesn't really
matter as this file is unused.

Author: JDevlieghere

lldb/tools/debugserver/debugserver.xcodeproj/project.pbxproj

@@ -163,7 +163,6 @@
 		456F67721AD46CE9002850C2 /* debugserver-nonui */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = "debugserver-nonui"; sourceTree = BUILT_PRODUCTS_DIR; };
 		49D404611E39260F00570CDC /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
 		49F5301213316D7F008956F6 /* MachRegisterStatesX86_64.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MachRegisterStatesX86_64.h; sourceTree = "<group>"; };
-		9457ECF61419864100DFE7D8 /* stack_logging.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = stack_logging.h; sourceTree = "<group>"; };
 		9684D93A29FCA1E10046D45E /* debugserver-macosx-private-entitlements.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; name = "debugserver-macosx-private-entitlements.plist"; path = "resources/debugserver-macosx-private-entitlements.plist"; sourceTree = SOURCE_ROOT; };
 		9684D93B29FCA1E10046D45E /* lldb-debugserver-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; name = "lldb-debugserver-Info.plist"; path = "resources/lldb-debugserver-Info.plist"; sourceTree = SOURCE_ROOT; };
 		9684D93C29FCA1E10046D45E /* debugserver-macosx-entitlements.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; name = "debugserver-macosx-entitlements.plist"; path = "resources/debugserver-macosx-entitlements.plist"; sourceTree = SOURCE_ROOT; };