Remove the ASTContext parameter from the getBody() methods of Decl and subclasses.

Timings showed no significant difference before and after the commit.

llvm-svn: 74504
diff --git a/clang/lib/Analysis/BasicStore.cpp b/clang/lib/Analysis/BasicStore.cpp
index 7210d2c..368345d 100644
--- a/clang/lib/Analysis/BasicStore.cpp
+++ b/clang/lib/Analysis/BasicStore.cpp
@@ -517,7 +517,7 @@
           
           // Scan the method for ivar references.  While this requires an
           // entire AST scan, the cost should not be high in practice.
-          St = scanForIvars(MD->getBody(getContext()), PD, St);
+          St = scanForIvars(MD->getBody(), PD, St);
         }
       }
     }