service: Drop '_Interface' in ptm service class names

Inheriting from Service::Interface makes this obvious.

src/core/hle/service/ptm/ptm.cpp

@@ -108,11 +108,11 @@ void CheckNew3DS(Service::Interface* self) {
 }
 
 void Init() {
-    AddService(new PTM_Gets());
-    AddService(new PTM_Play_Interface);
-    AddService(new PTM_Sets());
-    AddService(new PTM_Sysm_Interface);
-    AddService(new PTM_U_Interface);
+    AddService(new PTM_Gets);
+    AddService(new PTM_Play);
+    AddService(new PTM_Sets);
+    AddService(new PTM_Sysm);
+    AddService(new PTM_U);
 
     shell_open = true;
     battery_is_charging = true;

src/core/hle/service/ptm/ptm_play.cpp

@@ -14,7 +14,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x080B0080, nullptr, "CalcPlayHistoryStart"},
 };
 
-PTM_Play_Interface::PTM_Play_Interface() {
+PTM_Play::PTM_Play() {
     Register(FunctionTable);
 }
 

src/core/hle/service/ptm/ptm_play.h

@@ -9,9 +9,9 @@
 namespace Service {
 namespace PTM {
 
-class PTM_Play_Interface : public Service::Interface {
+class PTM_Play final : public Interface {
 public:
-    PTM_Play_Interface();
+    PTM_Play();
 
     std::string GetPortName() const override {
         return "ptm:play";

src/core/hle/service/ptm/ptm_sysm.cpp

@@ -42,7 +42,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x08180040, nullptr, "ConfigureNew3DSCPU"},
 };
 
-PTM_Sysm_Interface::PTM_Sysm_Interface() {
+PTM_Sysm::PTM_Sysm() {
     Register(FunctionTable);
 }
 

src/core/hle/service/ptm/ptm_sysm.h

@@ -9,9 +9,9 @@
 namespace Service {
 namespace PTM {
 
-class PTM_Sysm_Interface : public Interface {
+class PTM_Sysm final : public Interface {
 public:
-    PTM_Sysm_Interface();
+    PTM_Sysm();
 
     std::string GetPortName() const override {
         return "ptm:sysm";

src/core/hle/service/ptm/ptm_u.cpp

@@ -26,7 +26,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x000F0084, nullptr, "GetStepHistoryAll"},
 };
 
-PTM_U_Interface::PTM_U_Interface() {
+PTM_U::PTM_U() {
     Register(FunctionTable);
 }
 

src/core/hle/service/ptm/ptm_u.h

@@ -9,9 +9,9 @@
 namespace Service {
 namespace PTM {
 
-class PTM_U_Interface : public Interface {
+class PTM_U final : public Interface {
 public:
-    PTM_U_Interface();
+    PTM_U();
 
     std::string GetPortName() const override {
         return "ptm:u";