Remove unneeded in_external_macro call

Author: Jarcho

clippy_lints/src/needless_borrow.rs

@@ -10,8 +10,7 @@ use rustc_ast::util::parser::PREC_POSTFIX;
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_errors::Applicability;
 use rustc_hir::{BindingAnnotation, Body, BodyId, BorrowKind, Expr, ExprKind, HirId, Mutability, Pat, PatKind, UnOp};
-use rustc_lint::{LateContext, LateLintPass, LintContext};
-use rustc_middle::lint::in_external_macro;
+use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty;
 use rustc_middle::ty::adjustment::{Adjust, Adjustment};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
@@ -161,11 +160,10 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessBorrow {
             }
 
             if_chain! {
-                if !in_external_macro(cx.sess(), pat.span);
+                if !in_macro(pat.span);
                 if let ty::Ref(_, tam, _) = *cx.typeck_results().pat_ty(pat).kind();
                 // only lint immutable refs, because borrowed `&mut T` cannot be moved out
                 if let ty::Ref(_, _, Mutability::Not) = *tam.kind();
-                if !in_macro(pat.span);
                 then {
                     let mut app = Applicability::MachineApplicable;
                     let snip = snippet_with_context(cx, name.span, pat.span.ctxt(), "..", &mut app).0;