BaseTools: Remove unreachable code

Running the vulture tool gave the following report.
Remove the unreachable code.

- TargetTool/TargetTool.py:49:
  unreachable code after 'raise' (100% confidence)
- UPT/Library/UniClassObject.py:137:
  unreachable code after 'return' (100% confidence)
- UPT/Object/Parser/InfDefineObject.py:795:
  unreachable code after 'if' (100% confidence)
- Ecc/Check.py:1504:
  unreachable code after 'return' (100% confidence)

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>

BaseTools/Source/Python/Ecc/Check.py

@@ -1501,7 +1501,6 @@ def FindPara(FilePath, Para, CallingLine):
         if Line.startswith('%s = ' % Para):
             Line = Line.strip()
             return Line
-            break
 
     return ''
 

BaseTools/Source/Python/TargetTool/TargetTool.py

@@ -46,7 +46,6 @@ class TargetTool():
             return self.ConvertTextFileToDict(filename, '#', '=')
         else:
             raise ParseError('LoadTargetTxtFile() : No Target.txt file exists.')
-            return 1
 
 #
 # Convert a text file to a dictionary

BaseTools/Source/Python/UPT/Library/UniClassObject.py

@@ -133,40 +133,6 @@ def ConvertSpecialUnicodes(Uni):
 def GetLanguageCode1766(LangName, File=None):
     return LangName
 
-    length = len(LangName)
-    if length == 2:
-        if LangName.isalpha():
-            for Key in gLANG_CONV_TABLE.keys():
-                if gLANG_CONV_TABLE.get(Key) == LangName.lower():
-                    return Key
-    elif length == 3:
-        if LangName.isalpha() and gLANG_CONV_TABLE.get(LangName.lower()):
-            return LangName
-        else:
-            EdkLogger.Error("Unicode File Parser",
-                             ToolError.FORMAT_INVALID,
-                             "Invalid RFC 1766 language code : %s" % LangName,
-                             File)
-    elif length == 5:
-        if LangName[0:2].isalpha() and LangName[2] == '-':
-            for Key in gLANG_CONV_TABLE.keys():
-                if gLANG_CONV_TABLE.get(Key) == LangName[0:2].lower():
-                    return Key
-    elif length >= 6:
-        if LangName[0:2].isalpha() and LangName[2] == '-':
-            for Key in gLANG_CONV_TABLE.keys():
-                if gLANG_CONV_TABLE.get(Key) == LangName[0:2].lower():
-                    return Key
-        if LangName[0:3].isalpha() and gLANG_CONV_TABLE.get(LangName.lower()) is None and LangName[3] == '-':
-            for Key in gLANG_CONV_TABLE.keys():
-                if Key == LangName[0:3].lower():
-                    return Key
-
-    EdkLogger.Error("Unicode File Parser",
-                             ToolError.FORMAT_INVALID,
-                             "Invalid RFC 4646 language code : %s" % LangName,
-                             File)
-
 ## GetLanguageCode
 #
 # Check the language code read from .UNI file and convert RFC 1766 codes to RFC 4646 codes if appropriate

BaseTools/Source/Python/UPT/Object/Parser/InfDefineObject.py

@@ -792,7 +792,6 @@ class InfDefSection(InfDefSectionOptionRomInfo):
             ErrorInInf(ST.ERR_INF_PARSER_DEFINE_FROMAT_INVALID%(Name),
                        LineInfo=self.CurrentLine)
             return False
-        return True
 
     def GetSpecification(self):
         return self.Specification