chore: remove mod.rs files and exercises feature

exercises/advanced_errors/mod.rs

@@ -1,2 +0,0 @@
-mod advanced_errs1;
-mod advanced_errs2;

exercises/clippy/mod.rs

@@ -1,2 +0,0 @@
-mod clippy1;
-mod clippy2;

exercises/collections/mod.rs

@@ -1,4 +0,0 @@
-mod hashmap1;
-mod hashmap2;
-mod vec1;
-mod vec2;

exercises/conversions/mod.rs

@@ -1,5 +0,0 @@
-mod as_ref_mut;
-mod from_into;
-mod from_str;
-mod try_from_into;
-mod using_as;

exercises/enums/mod.rs

@@ -1,3 +0,0 @@
-mod enums1;
-mod enums2;
-mod enums3;

exercises/error_handling/mod.rs

@@ -1,6 +0,0 @@
-mod errors1;
-mod errors2;
-mod errors3;
-mod errors4;
-mod errors5;
-mod errors6;

exercises/functions/mod.rs

@@ -1,5 +0,0 @@
-mod functions1;
-mod functions2;
-mod functions3;
-mod functions4;
-mod functions5;

exercises/generics/mod.rs

@@ -1,3 +0,0 @@
-mod generics1;
-mod generics2;
-mod generics3;

exercises/if/mod.rs

@@ -1,2 +0,0 @@
-mod if1;
-mod if2;

exercises/intro/mod.rs

@@ -1,2 +0,0 @@
-mod intro1;
-mod intro2;

exercises/macros/mod.rs

@@ -1,4 +0,0 @@
-mod macros1;
-mod macros2;
-mod macros3;
-mod macros4;

exercises/mod.rs

@@ -1,26 +0,0 @@
-mod advanced_errors;
-mod clippy;
-mod collections;
-mod conversions;
-mod enums;
-mod error_handling;
-mod functions;
-mod generics;
-mod r#if;
-mod intro;
-mod macros;
-mod modules;
-mod move_semantics;
-mod option;
-mod primitive_types;
-mod quiz1;
-mod quiz2;
-mod quiz3;
-mod quiz4;
-mod standard_library_types;
-mod strings;
-mod structs;
-mod tests;
-mod threads;
-mod traits;
-mod variables;

exercises/modules/mod.rs

@@ -1,3 +0,0 @@
-mod modules1;
-mod modules2;
-mod modules3;

exercises/move_semantics/mod.rs

@@ -1,6 +0,0 @@
-mod move_semantics1;
-mod move_semantics2;
-mod move_semantics3;
-mod move_semantics4;
-mod move_semantics5;
-mod move_semantics6;

exercises/option/mod.rs

@@ -1,3 +0,0 @@
-mod option1;
-mod option2;
-mod option3;

exercises/primitive_types/mod.rs

@@ -1,6 +0,0 @@
-mod primitive_types1;
-mod primitive_types2;
-mod primitive_types3;
-mod primitive_types4;
-mod primitive_types5;
-mod primitive_types6;

exercises/standard_library_types/mod.rs

@@ -1,7 +0,0 @@
-mod arc1;
-mod box1;
-mod iterators1;
-mod iterators2;
-mod iterators3;
-mod iterators4;
-mod iterators5;

exercises/strings/mod.rs

@@ -1,2 +0,0 @@
-mod strings1;
-mod strings2;

exercises/structs/mod.rs

@@ -1,3 +0,0 @@
-mod structs1;
-mod structs2;
-mod structs3;

exercises/tests/mod.rs

@@ -1,3 +0,0 @@
-mod tests1;
-mod tests2;
-mod tests3;

exercises/threads/mod.rs

@@ -1 +0,0 @@
-mod threads1;

exercises/traits/mod.rs

@@ -1,2 +0,0 @@
-mod traits1;
-mod traits2;

exercises/variables/mod.rs

@@ -1,6 +0,0 @@
-mod variables1;
-mod variables2;
-mod variables3;
-mod variables4;
-mod variables5;
-mod variables6;