Remove wxUSE_WCHAR_T checks.

wxWidgets requires wchar_t for some time now; wx/chartype.h has a check
to fail complation without it. Simplify code by removing now-dead code
for the !wxUSE_WCHAR_T case.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63991 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/encconv.h

@@ -10,8 +10,7 @@
     @class wxEncodingConverter
 
     This class is capable of converting strings between two 8-bit encodings/charsets.
-    It can also convert from/to Unicode (but only if you compiled wxWidgets
-    with @c wxUSE_WCHAR_T set to 1).
+    It can also convert from/to Unicode.
 
     Only a limited subset of encodings is supported by wxEncodingConverter:
     @c wxFONTENCODING_ISO8859_1..15, @c wxFONTENCODING_CP1250..1257 and
@@ -64,9 +63,6 @@ public:
         considered a lossless operation.
 
         @note You must call Init() before using this method!
-
-        @note wchar_t versions of the method are not available if wxWidgets was
-              compiled with @c wxUSE_WCHAR_T set to 0.
     */
     bool Convert(const char* input, char* output) const;
     bool Convert(const wchar_t* input, wchar_t* output) const;