Fix issues according to sublimelsp/repository#51 (comment)

Author: dev-sptg

leo.tmLanguage

@@ -12,6 +12,10 @@
     <array>
       <string>leo</string>
     </array>
+    <key>extension</key>
+    <array>
+      <string>leo</string>
+    </array>
     <key>patterns</key>
     <array>
       <dict>

leoInput.tmLanguage

@@ -14,6 +14,12 @@
       <string>out</string>
       <string>state</string>
     </array>
+    <key>extension</key>
+    <array>
+      <string>in</string>
+      <string>out</string>
+      <string>state</string>
+    </array>
     <key>patterns</key>
     <array>
       <dict>

leoToml.tmLanguage

@@ -12,6 +12,10 @@
     <array>
       <string>toml</string>
     </array>
+    <key>extension</key>
+    <array>
+      <string>toml</string>
+    </array>
     <key>patterns</key>
     <array>
       <dict>

plugin.py

@@ -41,25 +41,6 @@ def on_coloring_service_colorize(self, request, response):
         # Server doesn't require any specific response.
         response(None)
 
-
-def setListener(view):
-    uri = view_to_uri(view)
-    if uri.endswith('.leo'):
-        view.assign_syntax("Packages/LSP-leo/leo.tmLanguage")
-        view.settings().set("lsp_uri", uri)
-    if uri.endswith('.in'):
-        view.assign_syntax("Packages/LSP-leo/leoInput.tmLanguage")
-        view.settings().set("lsp_uri", uri)
-    if uri.endswith('.state'):
-        view.assign_syntax("Packages/LSP-leo/leoInput.tmLanguage")
-        view.settings().set("lsp_uri", uri)
-    if uri.endswith('.out'):
-        view.assign_syntax("Packages/LSP-leo/leoInput.tmLanguage")
-        view.settings().set("lsp_uri", uri)
-    if uri.endswith('.toml'):
-        view.assign_syntax("Packages/LSP-leo/leoToml.tmLanguage")
-        view.settings().set("lsp_uri", uri)
-
 def sendColorizeRequest(view):
     listener = windows.listener_for_view(view)
     if listener:
@@ -76,16 +57,8 @@ def sendColorizeRequest(view):
                 request = Request("ColoringService.colorize", params)
                 session.send_request_async(request, lambda res: res, lambda res: res)
 
-
 class SyntaxColoringViewListener(sublime_plugin.ViewEventListener):
-    def on_activated_async(self):
-        setListener(self.view)       
-    def on_load_async(self):
-        setListener(self.view)
-    def on_modified_async(self):
-        setListener(self.view)
     def on_selection_modified_async(self):
-        setListener(self.view)
         sendColorizeRequest(self.view)
 
 class SyntaxColoring():