removed qr2 and rsa4

qr-2/description.md

@@ -1 +0,0 @@
-When I am not practicing my [Oboe](https://en.wikipedia.org/wiki/Oboe) for band, I have been working on a QR code generator. For some reason, some of the images are not scannable. [Here](${qr2_bmp}) is one, can you tell me what it says?

qr-2/grader.py

@@ -1,4 +0,0 @@
-def grade(autogen, answer):
-    if answer.find("th3re_R_2_manY_Types_0f_Oboes_4_m3!!!") != -1:
-        return True, "Congrats!"
-    return False, "Nope, try again."

qr-2/problem.yml

@@ -1,9 +0,0 @@
-title: QR 2
-author: wiresboy
-category: Forensics
-autogen: false
-programming: false
-value: 330
-hint: Is there another kind of Oboe?
-files:
-  - qr2.bmp

rsa4/description.md

@@ -1 +0,0 @@
-After doing so much RSA, I finally messed up.... pls help. I encrypted my secret [message]($rsa4) but the decryption isn't working!!

rsa4/grader.py

@@ -1,4 +0,0 @@
-def grade(autogen, key):
-    if key.find("m0dul4r_fuN!") != -1:
-        return True, "Thanks!"
-    return False, "Nope. You've failed me :("

rsa4/problem.yml

@@ -1,9 +0,0 @@
-author: arxenix
-title: RSA 4
-hint: Why won't it decrypt?
-category: Cryptography
-autogen: false
-programming: false
-value: 200
-files:
-  - rsa4

rsa4/rsa4

@@ -1,6 +0,0 @@
-p= 13013195056445077675245767987987229724588379930923318266833492046660374216223334270611792324721132438307229159984813414250922197169316235737830919431103659
-q= 12930920340230371085700418586571062330546634389230084495106445639925420450591673769061692508272948388121114376587634872733055494744188467315949429674451947
-
-e= 100
-
-C= 2536072596735405513004321180336671392201446145691544525658443473848104743281278364580324721238865873217702884067306856569406059869172045956521348858084998514527555980415205217073019437355422966248344183944699168548887273804385919216488597207667402462509907219285121314528666853710860436030055903562805252516